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An electronic musical instrument or electrophone is a musical instrument that produces sound using
electronic circuitry An electronic circuit is composed of individual electronic components, such as resistors, transistors, capacitors, inductors and diodes, connected by conductive wires or traces through which electric current can flow. It is a type of electrical ...
. Such an instrument sounds by outputting an electrical, electronic or digital audio signal that ultimately is plugged into a power amplifier which drives a
loudspeaker A loudspeaker (commonly referred to as a speaker or speaker driver) is an electroacoustic transducer that converts an electrical audio signal into a corresponding sound. A ''speaker system'', also often simply referred to as a "speaker" or ...
, creating the sound heard by the performer and listener. An electronic instrument might include a
user interface In the industrial design field of human–computer interaction, a user interface (UI) is the space where interactions between humans and machines occur. The goal of this interaction is to allow effective operation and control of the machine f ...
for controlling its sound, often by adjusting the pitch,
frequency Frequency is the number of occurrences of a repeating event per unit of time. It is also occasionally referred to as ''temporal frequency'' for clarity, and is distinct from ''angular frequency''. Frequency is measured in hertz (Hz) which is eq ...
, or duration of each
note Note, notes, or NOTE may refer to: Music and entertainment * Musical note, a pitched sound (or a symbol for a sound) in music * ''Notes'' (album), a 1987 album by Paul Bley and Paul Motian * ''Notes'', a common (yet unofficial) shortened version ...
. A common user interface is the
musical keyboard A musical keyboard is the set of adjacent depressible levers or keys on a musical instrument. Keyboards typically contain keys for playing the twelve notes of the Western musical scale, with a combination of larger, longer keys and smaller, sho ...
, which functions similarly to the keyboard on an acoustic
piano The piano is a stringed keyboard instrument in which the strings are struck by wooden hammers that are coated with a softer material (modern hammers are covered with dense wool felt; some early pianos used leather). It is played using a keyboa ...
, except that with an electronic keyboard, the keyboard itself does not make any sound. An electronic keyboard sends a signal to a
synth module A sound module is an electronic musical instrument without a human-playable interface such as a piano-style musical keyboard. Sound modules have to be operated using an externally connected device, which is often a MIDI controller, of which th ...
,
computer A computer is a machine that can be programmed to Execution (computing), carry out sequences of arithmetic or logical operations (computation) automatically. Modern digital electronic computers can perform generic sets of operations known as C ...
or other electronic or digital sound generator, which then creates a sound. However, it is increasingly common to separate user interface and sound-generating functions into a music controller (
input device In computing, an input device is a piece of equipment used to provide data and control signals to an information processing system, such as a computer or information appliance. Examples of input devices include keyboards, mouse, scanners, cameras ...
) and a
music synthesizer Algorithmic composition is the technique of using algorithms to create music. Algorithms (or, at the very least, formal sets of rules) have been used to compose music for centuries; the procedures used to plot voice-leading in Western counterpo ...
, respectively, with the two devices communicating through a musical performance description language such as
MIDI MIDI (; Musical Instrument Digital Interface) is a technical standard that describes a communications protocol, digital interface, and electrical connectors that connect a wide variety of electronic musical instruments, computers, and re ...
or
Open Sound Control Open Sound Control (OSC) is a protocol for networking sound synthesizers, computers, and other multimedia devices for purposes such as musical performance or show control. OSC's advantages include interoperability, accuracy, flexibility and enhan ...
. All electronic musical instruments can be viewed as a subset of
audio signal processing Audio signal processing is a subfield of signal processing that is concerned with the electronic manipulation of audio signals. Audio signals are electronic representations of sound waves—longitudinal waves which travel through air, consisting ...
applications. Simple electronic musical instruments are sometimes called
sound effect A sound effect (or audio effect) is an artificially created or enhanced sound, or sound process used to emphasize artistic or other content of films, television shows, live performance, animation, video games, music, or other media. Traditi ...
s; the border between sound effects and actual musical instruments is often unclear. In the 21st century, electronic musical instruments are now widely used in most styles of music. In popular music styles such as electronic dance music, almost all of the instrument sounds used in recordings are electronic instruments (e.g., bass synth,
synthesizer A synthesizer (also spelled synthesiser) is an electronic musical instrument that generates audio signals. Synthesizers typically create sounds by generating waveforms through methods including subtractive synthesis, additive synthesis and ...
, drum machine). Development of new electronic musical instruments, controllers, and synthesizers continues to be a highly active and interdisciplinary field of research. Specialized conferences, notably the International Conference on New Interfaces for Musical Expression, have organized to report cutting-edge work, as well as to provide a showcase for artists who perform or create music with new electronic music instruments, controllers, and synthesizers.


Classification

In musicology, electronic musical instruments are known as electrophones. Electrophones are the fifth category of musical instrument under the Hornbostel-Sachs system. Musicologists typically only classify music as electrophones if the sound is initially produced by electricity, excluding electronically controlled acoustic instruments such as
pipe organ The pipe organ is a musical instrument that produces sound by driving pressurized air (called ''wind'') through the organ pipes selected from a keyboard. Because each pipe produces a single pitch, the pipes are provided in sets called ''ranks ...
s and amplified instruments such as
electric guitar An electric guitar is a guitar that requires external amplification in order to be heard at typical performance volumes, unlike a standard acoustic guitar (however combinations of the two - a semi-acoustic guitar and an electric acoustic gui ...
s. The category was added to the Hornbostel-Sachs musical instrument classification system by
Sachs Sachs is a German surname, meaning "man from Saxony". Sachs is a common surname among Ashkenazi Jews from Saxony, in the United States sometimes adopted in the variant Zaks, supposedly in reference to the Hebrew phrase ''Zera Kodesh Shemo'' (ZaKS), ...
in 1940, in his 1940 book ''The History of Musical Instruments''; the original 1914 version of the system did not include it. Sachs divided electrophones into three subcategories: * 51=electrically
actuated An actuator is a component of a machine that is responsible for moving and controlling a mechanism or system, for example by opening a valve. In simple terms, it is a "mover". An actuator requires a control device (controlled by control signal) a ...
acoustic instrument Acoustic music is music that solely or primarily uses instruments that produce sound through acoustic means, as opposed to electric or electronic means. While all music was once acoustic, the retronym "acoustic music" appeared after the adven ...
s (e.g.,
pipe organ The pipe organ is a musical instrument that produces sound by driving pressurized air (called ''wind'') through the organ pipes selected from a keyboard. Because each pipe produces a single pitch, the pipes are provided in sets called ''ranks ...
with electronic tracker action) * 52=electrically amplified acoustic instruments (e.g.,
acoustic guitar An acoustic guitar is a musical instrument in the string family. When a string is plucked its vibration is transmitted from the bridge, resonating throughout the top of the guitar. It is also transmitted to the side and back of the instrument, ...
with pickup) * 53=instruments which make sound primarily by way of electrically driven
oscillator Oscillation is the repetitive or periodic variation, typically in time, of some measure about a central value (often a point of equilibrium) or between two or more different states. Familiar examples of oscillation include a swinging pendulum ...
s The last category included instruments such as
theremin The theremin (; originally known as the ætherphone/etherphone, thereminophone or termenvox/thereminvox) is an electronic musical instrument controlled without physical contact by the performer (who is known as a thereminist). It is named afte ...
s or
synthesizer A synthesizer (also spelled synthesiser) is an electronic musical instrument that generates audio signals. Synthesizers typically create sounds by generating waveforms through methods including subtractive synthesis, additive synthesis and ...
s, which he called radioelectric instruments.
Francis William Galpin Francis William Galpin (December 25, 1858 December 30, 1945) was an English cleric and antiquarian musicologist. He was known as a collector of old musical instruments. Life Born in Dorchester, Dorset, Galpin was educated at Sherborne and Trini ...
provided such a group in his own classification system, which is closer to Mahillon than Sachs-Hornbostel. For example, in Galpin's 1937 book ''A Textbook of European Musical Instruments'', he lists electrophones with three second-level divisions for sound generation ("by oscillation," "electro-magnetic," and "electro-static"), as well as third-level and fourth-level categories based on the control method. Present-day
ethnomusicologists Ethnomusicology is the study of music from the cultural and social aspects of the people who make it. It encompasses distinct theoretical and methodical approaches that emphasize cultural, social, material, cognitive, biological, and other dim ...
, such as Margaret Kartomi and Terry Ellingson, suggest that, in keeping with the spirit of the original Hornbostel Sachs classification scheme, if one categorizes instruments by what first produces the initial sound in the instrument, that only subcategory 53 should remain in the electrophones category. Thus, it has been more recently proposed, for example, that the pipe organ (even if it uses electric key action to control
solenoid valve A solenoid valve is an electromechanically operated valve. Solenoid valves differ in the characteristics of the electric current they use, the strength of the magnetic field they generate, the mechanism they use to regulate the fluid, and the ty ...
s) remain in the
aerophone An aerophone () is a musical instrument that produces sound primarily by causing a body of air to vibrate, without the use of strings or membranes (which are respectively chordophones and membranophones), and without the vibration of the instru ...
s category, and that the
electric guitar An electric guitar is a guitar that requires external amplification in order to be heard at typical performance volumes, unlike a standard acoustic guitar (however combinations of the two - a semi-acoustic guitar and an electric acoustic gui ...
remain in the
chordophone String instruments, stringed instruments, or chordophones are musical instruments that produce sound from vibrating strings when a performer plays or sounds the strings in some manner. Musicians play some string instruments by plucking the st ...
s category, and so on.


Early examples

In the 18th-century, musicians and composers adapted a number of acoustic instruments to exploit the novelty of electricity. Thus, in the broadest sense, the first electrified musical instrument was the
Denis d'or The Denis d’or (Golden Dionysus) was reportedly the first musical instrument in history that involved electricity. Background The Czech theologian Václav Prokop Diviš, who had his parish in the Moravian town Přímětice near Znojmo, was int ...
keyboard, dating from 1753, followed shortly by the
clavecin électrique The clavecin électrique (or clavessin électrique) was a musical instrument invented in 1759 by Jean-Baptiste Thillaie Delaborde, a French Jesuit priest. It is the earliest surviving electric-powered musical instrument, antedated only by the ...
by the Frenchman Jean-Baptiste de Laborde in 1761. The Denis d'or consisted of a keyboard instrument of over 700 strings, electrified temporarily to enhance sonic qualities. The clavecin électrique was a keyboard instrument with plectra (picks) activated electrically. However, neither instrument used electricity as a sound-source. The first electric synthesizer was invented in 1876 by Elisha Gray. The "Musical Telegraph" was a chance by-product of his telephone technology when Gray discovered that he could control sound from a self-vibrating electromagnetic circuit and so invented a basic
oscillator Oscillation is the repetitive or periodic variation, typically in time, of some measure about a central value (often a point of equilibrium) or between two or more different states. Familiar examples of oscillation include a swinging pendulum ...
. The Musical Telegraph used steel reeds oscillated by electromagnets and transmitted over a telephone line. Gray also built a simple loudspeaker device into later models, which consisted of a diaphragm vibrating in a magnetic field. A significant invention, which later had a profound effect on electronic music, was the
audion The Audion was an electronic detecting or amplifying vacuum tube invented by American electrical engineer Lee de Forest in 1906.De Forest patented a number of variations of his detector tubes starting in 1906. The patent that most clearly covers ...
in 1906. This was the first thermionic valve, or
vacuum tube A vacuum tube, electron tube, valve (British usage), or tube (North America), is a device that controls electric current flow in a high vacuum between electrodes to which an electric voltage, potential difference has been applied. The type kn ...
and which led to the generation and amplification of electrical signals, radio broadcasting, and electronic computation, among other things. Other early synthesizers included the
Telharmonium The Telharmonium (also known as the Dynamophone) was an early electrical organ, developed by Thaddeus Cahill c. 1896 and patented in 1897. , filed 1896-02-04. The electrical signal from the Telharmonium was transmitted over wires; it was hear ...
(1897), the
Theremin The theremin (; originally known as the ætherphone/etherphone, thereminophone or termenvox/thereminvox) is an electronic musical instrument controlled without physical contact by the performer (who is known as a thereminist). It is named afte ...
(1919), Jörg Mager's
Spharophon The Sphärophon or a Spherophone is an electrical musical instrument that was first made as the "Electrophon" around 1921 by Jörg Mager, later modified, renamed and exhibited in 1926. Two variants of the Sphärophon Mager invented two differe ...
(1924) and Partiturophone, Taubmann's similar
Electronde The theremin (; originally known as the ætherphone/etherphone, thereminophone or termenvox/thereminvox) is an electronic musical instrument controlled without physical contact by the performer (who is known as a thereminist). It is named afte ...
(1933),
Maurice Martenot Maurice Louis Eugène Martenot (; October 14, 1898 – October 8, 1980) was a French cellist, a radio telegrapher during the first World War, and an inventor. Born in Paris, he is best known for his invention of the ondes Martenot, an instrument ...
's
ondes Martenot The ondes Martenot ( ; , "Martenot waves") or ondes musicales ("musical waves") is an early electronic musical instrument. It is played with a keyboard or by moving a ring along a wire, creating "wavering" sounds similar to a theremin. A player ...
("Martenot waves", 1928), Trautwein's
Trautonium The Trautonium is an electronic synthesizer invented in 1930 by Friedrich Trautwein in Berlin at the Musikhochschule's music and radio lab, the Rundfunkversuchstelle. Soon afterwards Oskar Sala joined him, continuing development until Sala's de ...
(1930). The Mellertion (1933) used a non-standard scale, Bertrand's Dynaphone could produce octaves and perfect fifths, while the Emicon was an American, keyboard-controlled instrument constructed in 1930 and the German Hellertion combined four instruments to produce chords. Three Russian instruments also appeared, Oubouhof's Croix Sonore (1934),
Ivor Darreg Ivor Darreg (May 5, 1917 – February 12, 1994) was an American composer and leading proponent of microtonal or " xenharmonic" music. He also created a series of experimental musical instruments. Biography Darreg, a contemporary of Harry Part ...
's
microtonal Microtonal music or microtonality is the use in music of microtones— intervals smaller than a semitone, also called "microintervals". It may also be extended to include any music using intervals not found in the customary Western tuning of t ...
'Electronic Keyboard Oboe' (1937) and the
ANS synthesizer The ANS synthesizer is a photoelectronic musical instrument created by Russian engineer Evgeny Murzin from 1937 to 1957. The technological basis of his invention was the method of graphical sound recording used in cinematography (developed in Ru ...
, constructed by the Russian scientist
Evgeny Murzin Yevgeny Murzin (russian: Евгений Мурзин; 1914–1970) was a Russian audio engineer and inventor of the ANS synthesizer. Murzin's synthesizer In 1938, invented a design for composers based on synthesizing complex musical sounds fr ...
from 1937 to 1958. Only two models of this latter were built and the only surviving example is currently stored at the Lomonosov University in
Moscow Moscow ( , US chiefly ; rus, links=no, Москва, r=Moskva, p=mɐskˈva, a=Москва.ogg) is the capital and largest city of Russia. The city stands on the Moskva River in Central Russia, with a population estimated at 13.0 million ...
. It has been used in many Russian movies—like ''
Solaris Solaris may refer to: Arts and entertainment Literature, television and film * ''Solaris'' (novel), a 1961 science fiction novel by Stanisław Lem ** ''Solaris'' (1968 film), directed by Boris Nirenburg ** ''Solaris'' (1972 film), directed by ...
''—to produce unusual, "cosmic" sounds.
Hugh Le Caine Hugh Le Caine (May 27, 1914 – July 3, 1977) was a Canadian physicist, composer, and instrument builder. Le Caine was brought up in Port Arthur (now Thunder Bay) in northwestern Ontario. At a young age, he began making musical instruments. In yo ...
, John Hanert,
Raymond Scott Raymond Scott (born Harry Warnow; September 10, 1908 – February 8, 1994) was an American composer, band leader, pianist, record producer, and inventor of electronic instruments. Though Scott never scored cartoon soundtracks, his music is ...
, composer
Percy Grainger Percy Aldridge Grainger (born George Percy Grainger; 8 July 188220 February 1961) was an Australian-born composer, arranger and pianist who lived in the United States from 1914 and became an American citizen in 1918. In the course of a long an ...
(with Burnett Cross), and others built a variety of automated electronic-music controllers during the late 1940s and 1950s. In 1959
Daphne Oram Daphne Blake Oram (31 December 1925 – 5 January 2003) was a British composer and electronic musician. She was one of the first British composers to produce electronic sound, and was an early practitioner of musique concrète in the UK. As a co ...
produced a novel method of synthesis, her "
Oramics __NOTOC__ Oramics is a drawn sound technique designed in 1957 by musician Daphne Oram. The machine was further developed in 1962 after receiving a grant from the Gulbenkian Foundation. The technique involves drawing on 35mm film strips to c ...
" technique, driven by drawings on a 35 mm film strip; it was used for a number of years at the
BBC Radiophonic Workshop The BBC Radiophonic Workshop was one of the sound effects units of the BBC, created in 1958 to produce incidental sounds and new music for radio and, later, television. The unit is known for its experimental and pioneering work in electroni ...
. This workshop was also responsible for the theme to the TV series ''
Doctor Who ''Doctor Who'' is a British science fiction television series broadcast by the BBC since 1963. The series depicts the adventures of a Time Lord called the Doctor, an extraterrestrial being who appears to be human. The Doctor explores the u ...
'' a piece, largely created by
Delia Derbyshire Delia Ann Derbyshire (5 May 1937 – 3 July 2001) was an English musician and composer of electronic music. She carried out notable work with the BBC Radiophonic Workshop during the 1960s, including her electronic arrangement of the theme ...
, that more than any other ensured the popularity of electronic music in the UK.


Telharmonium

In 1897
Thaddeus Cahill Thaddeus Cahill (June 18, 1867 – April 12, 1934) was a prominent inventor of the early 20th century. He is widely credited with the invention of the first electromechanical musical instrument, which he dubbed the telharmonium. He studied the ...
patented an instrument called the Telharmonium (or Teleharmonium, also known as the Dynamaphone). Using
tonewheel A tonewheel or tone wheel is a simple electromechanical apparatus used for generating electric musical notes in electromechanical organ instruments such as the Hammond Organ and in telephony to generate audible signals such as Ringing tone. ...
s to generate musical sounds as electrical signals by
additive synthesis Additive synthesis is a sound synthesis technique that creates timbre by adding sine waves together. The timbre of musical instruments can be considered in the light of Fourier series, Fourier theory to consist of multiple harmonic or inharmoni ...
, it was capable of producing any combination of notes and overtones, at any dynamic level. This technology was later used to design the
Hammond organ The Hammond organ is an electric organ invented by Laurens Hammond and John M. Hanert and first manufactured in 1935. Multiple models have been produced, most of which use sliding drawbars to vary sounds. Until 1975, Hammond organs generated s ...
. Between 1901 and 1910 Cahill had three progressively larger and more complex versions made, the first weighing seven tons, the last in excess of 200 tons. Portability was managed only by rail and with the use of thirty boxcars. By 1912, public interest had waned, and Cahill's enterprise was bankrupt.


Theremin

Another development, which aroused the interest of many composers, occurred in 1919–1920. In Leningrad,
Leon Theremin Leon Theremin (born Lev Sergeyevich Termen rus, Лев Сергеевич Термéн, p=ˈlʲef sʲɪrˈɡʲejɪvʲɪtɕ tɨrˈmʲen; – 3 November 1993) was a Russian and USSR, Soviet inventor, most famous for his invention of the theremin, ...
built and demonstrated his Etherophone, which was later renamed the
Theremin The theremin (; originally known as the ætherphone/etherphone, thereminophone or termenvox/thereminvox) is an electronic musical instrument controlled without physical contact by the performer (who is known as a thereminist). It is named afte ...
. This led to the first compositions for electronic instruments, as opposed to noisemakers and re-purposed machines. The Theremin was notable for being the first musical instrument played without touching it. In 1929,
Joseph Schillinger Joseph Moiseyevich Schillinger ( Russian: Иосиф Моисеевич Шиллингер, (other sources: ) – 23 March 1943) was a composer, music theorist, and composition teacher who originated the Schillinger System of Musical Compositio ...
composed ''First Airphonic Suite for Theremin and Orchestra'', premièred with the
Cleveland Orchestra The Cleveland Orchestra, based in Cleveland, is one of the five American orchestras informally referred to as the " Big Five". Founded in 1918 by the pianist and impresario Adella Prentiss Hughes, the orchestra plays most of its concerts at Se ...
with
Leon Theremin Leon Theremin (born Lev Sergeyevich Termen rus, Лев Сергеевич Термéн, p=ˈlʲef sʲɪrˈɡʲejɪvʲɪtɕ tɨrˈmʲen; – 3 November 1993) was a Russian and USSR, Soviet inventor, most famous for his invention of the theremin, ...
as soloist. The next year
Henry Cowell Henry Dixon Cowell (; March 11, 1897 – December 10, 1965) was an American composer, writer, pianist, publisher and teacher. Marchioni, Tonimarie (2012)"Henry Cowell: A Life Stranger Than Fiction" ''The Juilliard Journal''. Retrieved 19 June 202 ...
commissioned Theremin to create the first electronic rhythm machine, called the
Rhythmicon The Rhythmicon—also known as the Polyrhythmophone—was an electro-mechanical musical instrument designed and built by Leon Theremin for composer Henry Cowell, intended to reveal connections between rhythms, pitches and the harmonic series. I ...
. Cowell wrote some compositions for it, which he and Schillinger premiered in 1932.


Ondes Martenot

The 1920s have been called the apex of the Mechanical Age and the dawning of the Electrical Age. In 1922, in Paris,
Darius Milhaud Darius Milhaud (; 4 September 1892 – 22 June 1974) was a French composer, conductor, and teacher. He was a member of Les Six—also known as ''The Group of Six''—and one of the most prolific composers of the 20th century. His compositions ...
began experiments with "vocal transformation by phonograph speed change."Herbert Russcol, ''The Liberation of Sound: An Introduction to Electronic Music'' ( Englewood Cliffs, New Jersey: Prentice-Hall, 1972): 68. These continued until 1927. This decade brought a wealth of early electronic instruments—along with the Theremin, there is the presentation of the
Ondes Martenot The ondes Martenot ( ; , "Martenot waves") or ondes musicales ("musical waves") is an early electronic musical instrument. It is played with a keyboard or by moving a ring along a wire, creating "wavering" sounds similar to a theremin. A player ...
, which was designed to reproduce the microtonal sounds found in Hindu music, and the
Trautonium The Trautonium is an electronic synthesizer invented in 1930 by Friedrich Trautwein in Berlin at the Musikhochschule's music and radio lab, the Rundfunkversuchstelle. Soon afterwards Oskar Sala joined him, continuing development until Sala's de ...
. Maurice Martenot invented the Ondes Martenot in 1928, and soon demonstrated it in Paris. Composers using the instrument ultimately include
Boulez Pierre Louis Joseph Boulez (; 26 March 1925 – 5 January 2016) was a French composer, conductor and writer, and the founder of several musical institutions. He was one of the dominant figures of post-war Western classical music. Born in Mon ...
,
Honegger Arthur Honegger (; 10 March 1892 – 27 November 1955) was a Swiss composer who was born in France and lived a large part of his life in Paris. A member of Les Six, his best known work is probably ''Antigone'', composed between 1924 and 1927 to ...
, Jolivet, Koechlin,
Messiaen Olivier Eugène Prosper Charles Messiaen (, ; ; 10 December 1908 – 27 April 1992) was a French composer, organist, and ornithologist who was one of the major composers of the 20th century. His music is rhythmically complex; harmonicall ...
,
Milhaud Darius Milhaud (; 4 September 1892 – 22 June 1974) was a French composer, conductor, and teacher. He was a member of Les Six—also known as ''The Group of Six''—and one of the most prolific composers of the 20th century. His compositions ...
, Tremblay, and Varèse.
Radiohead Radiohead are an English rock band formed in Abingdon, Oxfordshire, in 1985. The band consists of Thom Yorke (vocals, guitar, piano, keyboards); brothers Jonny Greenwood (lead guitar, keyboards, other instruments) and Colin Greenwood (bass) ...
guitarist and multi-instrumentalist Jonny Greenwood also uses it in his compositions and a plethora of Radiohead songs. In 1937, Messiaen wrote ''Fête des belles eaux'' for 6 ondes Martenot, and wrote solo parts for it in ''
Trois petites Liturgies de la Présence Divine ''Trois'' is a 2000 erotic thriller film directed by Rob Hardy and produced by William Packer. It stars Gary Dourdan, Kenya Moore and Gretchen Palmer. The film was given a limited theatrical release and was one of the years highest grossing ...
'' (1943–44) and the ''
Turangalîla-Symphonie The ''Turangalîla-Symphonie'' is the only symphony by Olivier Messiaen (1908–1992). It was written for an orchestra of large forces from 1946 to 1948 on a commission by Serge Koussevitzky in his wife's memory for the Boston Symphony Orches ...
'' (1946–48/90).


Trautonium

The Trautonium was invented in 1928. It was based on the subharmonic scale, and the resulting sounds were often used to emulate bell or gong sounds, as in the 1950s Bayreuth productions of ''
Parsifal ''Parsifal'' ( WWV 111) is an opera or a music drama in three acts by the German composer Richard Wagner and his last composition. Wagner's own libretto for the work is loosely based on the 13th-century Middle High German epic poem ''Parzival'' ...
''. In 1942, Richard Strauss used it for the bell- and gong-part in the Dresden première of his ''Japanese Festival Music''. This new class of instruments, microtonal by nature, was only adopted slowly by composers at first, but by the early 1930s there was a burst of new works incorporating these and other electronic instruments.


Hammond organ and Novachord

In 1929
Laurens Hammond Laurens Hammond (January 11, 1895 – July 1, 1973), was an American engineer and inventor. His inventions include the Hammond organ, the Hammond clock, and the world's first polyphonic musical synthesizer, the Novachord. Youth Lauren ...
established his company for the manufacture of electronic instruments. He went on to produce the
Hammond organ The Hammond organ is an electric organ invented by Laurens Hammond and John M. Hanert and first manufactured in 1935. Multiple models have been produced, most of which use sliding drawbars to vary sounds. Until 1975, Hammond organs generated s ...
, which was based on the principles of the
Telharmonium The Telharmonium (also known as the Dynamophone) was an early electrical organ, developed by Thaddeus Cahill c. 1896 and patented in 1897. , filed 1896-02-04. The electrical signal from the Telharmonium was transmitted over wires; it was hear ...
, along with other developments including early reverberation units. The Hammond organ is an electromechanical instrument, as it used both mechanical elements and electronic parts. A Hammond organ used spinning metal tonewheels to produce different sounds. A magnetic pickup similar in design to the pickups in an
electric guitar An electric guitar is a guitar that requires external amplification in order to be heard at typical performance volumes, unlike a standard acoustic guitar (however combinations of the two - a semi-acoustic guitar and an electric acoustic gui ...
is used to transmit the pitches in the tonewheels to an amplifier and speaker enclosure. While the Hammond organ was designed to be a lower-cost alternative to a
pipe organ The pipe organ is a musical instrument that produces sound by driving pressurized air (called ''wind'') through the organ pipes selected from a keyboard. Because each pipe produces a single pitch, the pipes are provided in sets called ''ranks ...
for church music, musicians soon discovered that the Hammond was an excellent instrument for
blues Blues is a music genre and musical form which originated in the Deep South of the United States around the 1860s. Blues incorporated spirituals, work songs, field hollers, shouts, chants, and rhymed simple narrative ballads from the Afr ...
and
jazz Jazz is a music genre that originated in the African-American communities of New Orleans, Louisiana in the late 19th and early 20th centuries, with its roots in blues and ragtime. Since the 1920s Jazz Age, it has been recognized as a major ...
; indeed, an entire genre of music developed built around this instrument, known as the
organ trio An organ trio is a form of jazz ensemble consisting of three musicians; a Hammond organ player, a drummer, and either a jazz guitarist or a saxophone player. In some cases the saxophonist will join a trio which consists of an organist, guitarist, ...
(typically Hammond organ, drums, and a third instrument, either saxophone or guitar). The first commercially manufactured synthesizer was the
Novachord The Novachord is an electronic musical instrument often considered the world's first commercial polyphonic synthesizer. All-electronic, incorporating many circuit and control elements found in modern synthesizers, and using subtractive synth ...
, built by the
Hammond Organ The Hammond organ is an electric organ invented by Laurens Hammond and John M. Hanert and first manufactured in 1935. Multiple models have been produced, most of which use sliding drawbars to vary sounds. Until 1975, Hammond organs generated s ...
Company from 1938 to 1942, which offered 72-note
polyphony Polyphony ( ) is a type of musical texture consisting of two or more simultaneous lines of independent melody, as opposed to a musical texture with just one voice, monophony, or a texture with one dominant melodic voice accompanied by chords, h ...
using 12 oscillators driving monostable-based divide-down circuits, basic
envelope An envelope is a common packaging item, usually made of thin, flat material. It is designed to contain a flat object, such as a letter or card. Traditional envelopes are made from sheets of paper cut to one of three shapes: a rhombus, a sh ...
control and resonant
low-pass filter A low-pass filter is a filter that passes signals with a frequency lower than a selected cutoff frequency and attenuates signals with frequencies higher than the cutoff frequency. The exact frequency response of the filter depends on the filter des ...
s. The instrument featured 163 vacuum tubes and weighed 500 pounds. The instrument's use of envelope control is significant, since this is perhaps the most significant distinction between the modern synthesizer and other electronic instruments.


Analogue synthesis 1950–1980

The most commonly used electronic instruments are
synthesizer A synthesizer (also spelled synthesiser) is an electronic musical instrument that generates audio signals. Synthesizers typically create sounds by generating waveforms through methods including subtractive synthesis, additive synthesis and ...
s, so-called because they artificially generate sound using a variety of techniques. All early circuit-based synthesis involved the use of analogue circuitry, particularly voltage controlled amplifiers, oscillators and filters. An important technological development was the invention of the
Clavivox The Clavivox was a keyboard sound synthesizer and sequencer developed by American composer Raymond Scott beginning in 1952. He applied for a patent in December 1956 and was granted on Feb. 3, 1959. Scott had earlier built a theremin as a toy fo ...
synthesizer A synthesizer (also spelled synthesiser) is an electronic musical instrument that generates audio signals. Synthesizers typically create sounds by generating waveforms through methods including subtractive synthesis, additive synthesis and ...
in 1956 by
Raymond Scott Raymond Scott (born Harry Warnow; September 10, 1908 – February 8, 1994) was an American composer, band leader, pianist, record producer, and inventor of electronic instruments. Though Scott never scored cartoon soundtracks, his music is ...
with subassembly by
Robert Moog Robert Arthur Moog ( ; May 23, 1934 – August 21, 2005) was an American engineer and electronic music pioneer. He was the founder of the synthesizer manufacturer Moog Music and the inventor of the first commercial synthesizer, the Moog synthesi ...
. French
composer A composer is a person who writes music. The term is especially used to indicate composers of Western classical music, or those who are composers by occupation. Many composers are, or were, also skilled performers of music. Etymology and Defi ...
and engineer
Edgard Varèse Edgard Victor Achille Charles Varèse (; also spelled Edgar; December 22, 1883 – November 6, 1965) was a French-born composer who spent the greater part of his career in the United States. Varèse's music emphasizes timbre and rhythm; he coined ...
created a variety of compositions using electronic horns, whistles, and tape. Most notably, he wrote ''
Poème électronique ''Poème électronique'' (English Translation: "Electronic Poem") is an 8-minute piece of electronic music by composer Edgard Varèse, written for the Philips Pavilion at the 1958 Brussels World's Fair. The Philips corporation commissioned Le ...
'' for the Phillips pavilion at the
Brussels World Fair Expo 58, also known as the 1958 Brussels World's Fair (french: Exposition Universelle et Internationale de Bruxelles de 1958, nl, Brusselse Wereldtentoonstelling van 1958), was a world's fair held on the Heysel/Heizel Plateau in Brussels, Bel ...
in 1958.


Modular synthesizers

RCA The RCA Corporation was a major American electronics company, which was founded as the Radio Corporation of America in 1919. It was initially a patent trust owned by General Electric (GE), Westinghouse, AT&T Corporation and United Fruit Comp ...
produced experimental devices to synthesize voice and music in the 1950s. The Mark II Music Synthesizer, housed at the
Columbia-Princeton Electronic Music Center The Computer Music Center (CMC) at Columbia University is the oldest center for electronic and computer music research in the United States. It was founded in the 1950s as the Columbia-Princeton Electronic Music Center. Location The CMC is hou ...
in
New York City New York, often called New York City or NYC, is the List of United States cities by population, most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the L ...
. Designed by Herbert Belar and Harry Olson at RCA, with contributions from
Vladimir Ussachevsky Vladimir Alexeevich Ussachevsky (November 3, 1911 in Hailar, China – January 2, 1990 in New York, New York) was a composer, particularly known for his work in electronic music. Biography Vladimir Ussachevsky was born in the Hailar Distric ...
and Peter Mauzey, it was installed at Columbia University in 1957. Consisting of a room-sized array of interconnected sound synthesis components, it was only capable of producing music by programming, using a
paper tape Five- and eight-hole punched paper tape Paper tape reader on the Harwell computer with a small piece of five-hole tape connected in a circle – creating a physical program loop Punched tape or perforated paper tape is a form of data storage ...
sequencer Sequencer may refer to: Technology * Drum sequencer (controller), an electromechanical system for controlling a sequence of events automatically * DNA sequencer, a machine used to automatically produce a sequence readout from a biological DNA sam ...
punched with holes to control pitch sources and filters, similar to a mechanical
player piano A player piano (also known as a pianola) is a self-playing piano containing a pneumatic or electro-mechanical mechanism, that operates the piano action via programmed music recorded on perforated paper or metallic rolls, with more modern i ...
but capable of generating a wide variety of sounds. The
vacuum tube A vacuum tube, electron tube, valve (British usage), or tube (North America), is a device that controls electric current flow in a high vacuum between electrodes to which an electric voltage, potential difference has been applied. The type kn ...
system had to be patched to create timbres. In the 1960s synthesizers were still usually confined to studios due to their size. They were usually modular in design, their stand-alone signal sources and processors connected with patch cords or by other means and controlled by a common controlling device.
Harald Bode Harald Bode (October 19, 1909 – January 15, 1987) was a German engineer and pioneer in the development of electronic musical instruments. Biography Harald Bode was born in 1909 in Hamburg, Germany. At the age of 18 he lost his parents an ...
,
Don Buchla Donald Buchla (April 17, 1937 – September 14, 2016) was an American pioneer in the field of sound synthesis. Buchla popularized the "West Coast" style of synthesis. He was co-inventor of the voltage controlled modular synthesizer along with Rob ...
,
Hugh Le Caine Hugh Le Caine (May 27, 1914 – July 3, 1977) was a Canadian physicist, composer, and instrument builder. Le Caine was brought up in Port Arthur (now Thunder Bay) in northwestern Ontario. At a young age, he began making musical instruments. In yo ...
,
Raymond Scott Raymond Scott (born Harry Warnow; September 10, 1908 – February 8, 1994) was an American composer, band leader, pianist, record producer, and inventor of electronic instruments. Though Scott never scored cartoon soundtracks, his music is ...
and Paul Ketoff were among the first to build such instruments, in the late 1950s and early 1960s. Buchla later produced a commercial modular synthesizer, the
Buchla Music Easel Buchla Electronic Musical Instruments (BEMI) was a manufacturer of synthesizers and unique MIDI controllers. The origins of the company could be found in Buchla & Associates, created in 1963 by synthesizer pioneer Don Buchla of Berkeley, Californ ...
.
Robert Moog Robert Arthur Moog ( ; May 23, 1934 – August 21, 2005) was an American engineer and electronic music pioneer. He was the founder of the synthesizer manufacturer Moog Music and the inventor of the first commercial synthesizer, the Moog synthesi ...
, who had been a student of Peter Mauzey and one of the RCA Mark II engineers, created a synthesizer that could reasonably be used by musicians, designing the circuits while he was at Columbia-Princeton. The
Moog synthesizer The Moog synthesizer is a modular synthesizer developed by the American engineer Robert Moog. Moog debuted it in 1964, and Moog's company R. A. Moog Co. (later known as Moog Music) produced numerous models from 1965 to 1981, and again from 20 ...
was first displayed at the
Audio Engineering Society The Audio Engineering Society (AES) is a professional body for engineers, scientists, other individuals with an interest or involvement in the professional audio industry. The membership largely comprises engineers developing devices or products ...
convention in 1964. It required experience to set up sounds but was smaller and more intuitive than what had come before, less like a machine and more like a musical instrument. Moog established standards for control interfacing, using a logarithmic 1-volt-per-octave for pitch control and a separate triggering signal. This standardization allowed synthesizers from different manufacturers to operate simultaneously. Pitch control was usually performed either with an organ-style keyboard or a
music sequencer A music sequencer (or audio sequencer or simply sequencer) is a device or application software that can record, edit, or play back music, by handling note and performance information in several forms, typically CV/Gate, MIDI, or Open Sound Cont ...
producing a timed series of control voltages. During the late 1960s hundreds of popular recordings used Moog synthesizers. Other early commercial synthesizer manufacturers included ARP, who also started with modular synthesizers before producing all-in-one instruments, and British firm EMS.


Integrated synthesizers

In 1970, Moog designed the
Minimoog The Minimoog is an analog synthesizer first manufactured by Moog Music between 1970 and 1981. Designed as a more affordable, portable version of the modular Moog synthesizer, it was the first synthesizer sold in retail stores. It was first popul ...
, a non-modular synthesizer with a built-in keyboard. The analogue circuits were interconnected with switches in a simplified arrangement called "normalization." Though less flexible than a modular design, normalization made the instrument more portable and easier to use. The
Minimoog The Minimoog is an analog synthesizer first manufactured by Moog Music between 1970 and 1981. Designed as a more affordable, portable version of the modular Moog synthesizer, it was the first synthesizer sold in retail stores. It was first popul ...
sold 12,000 units. Further standardized the design of subsequent synthesizers with its integrated keyboard, pitch and modulation wheels and VCO->VCF->VCA signal flow. It has become celebrated for its "fat" sound—and its tuning problems. Miniaturized solid-state components allowed synthesizers to become self-contained, portable instruments that soon appeared in live performance and quickly became widely used in popular music and electronic art music.


Polyphony

Many early analog synthesizers were monophonic, producing only one tone at a time. Popular monophonic synthesizers include the Moog
Minimoog The Minimoog is an analog synthesizer first manufactured by Moog Music between 1970 and 1981. Designed as a more affordable, portable version of the modular Moog synthesizer, it was the first synthesizer sold in retail stores. It was first popul ...
. A few, such as the Moog Sonic Six,
ARP Odyssey The ARP Odyssey is an analog synthesizer introduced by ARP Instruments in 1972. History ARP developed the Odyssey as a direct competitor to the Moog Minimoog and an answer to the demand for more affordable, portable, and less complicated "perf ...
and EML 101, could produce two different pitches at a time when two keys were pressed.
Polyphony Polyphony ( ) is a type of musical texture consisting of two or more simultaneous lines of independent melody, as opposed to a musical texture with just one voice, monophony, or a texture with one dominant melodic voice accompanied by chords, h ...
(multiple simultaneous tones, which enables
chords Chord may refer to: * Chord (music), an aggregate of musical pitches sounded simultaneously ** Guitar chord a chord played on a guitar, which has a particular tuning * Chord (geometry), a line segment joining two points on a curve * Chord ( ...
) was only obtainable with electronic organ designs at first. Popular electronic keyboards combining organ circuits with synthesizer processing included the ARP Omni and Moog's Polymoog and Opus 3. By 1976 affordable polyphonic synthesizers began to appear, notably the Yamaha CS-50, CS-60 and CS-80, the
Sequential Circuits Prophet-5 The Prophet-5 is an analog synthesizer manufactured by the American company Sequential. It was designed by Dave Smith and John Bowen in 1977, who used microprocessors, then a new technology, to create the first polyphonic synthesizer with full ...
and the
Oberheim Oberheim is an American synthesizer manufacturer founded in 1969 by Tom Oberheim. History and products Tom Oberheim founded the company in 1969, originally as a designer and contract manufacturer of electronic effects devices for Maestro (most ...
Four-Voice. These remained complex, heavy and relatively costly. The recording of settings in digital memory allowed storage and recall of sounds. The first practical polyphonic synth, and the first to use a microprocessor as a controller, was the
Sequential Circuits Sequential is an American synthesizer company founded in 1974 as Sequential Circuits by Dave Smith. In 1978, Sequential released the Prophet-5, the first programmable polyphonic synthesizer; it became a market leader and industry standard, use ...
Prophet-5 The Prophet-5 is an analog synthesizer manufactured by the American company Sequential (company), Sequential. It was designed by Dave Smith (engineer), Dave Smith and John S. Bowen (sound designer), John Bowen in 1977, who used Microprocessor, m ...
introduced in late 1977. For the first time, musicians had a practical polyphonic synthesizer that could save all knob settings in computer memory and recall them at the touch of a button. The Prophet-5's design paradigm became a new standard, slowly pushing out more complex and recondite modular designs.


Tape recording

In 1935, another significant development was made in Germany. Allgemeine Elektricitäts Gesellschaft (AEG) demonstrated the first commercially produced magnetic tape recorder, called the ''
Magnetophon Magnetophone, or simply Magnetophon, was the brand or model name of the pioneering reel-to-reel tape recorder developed by engineers of the German electronics company AEG in the 1930s, based on the magnetic tape invention by Fritz Pfleumer Fr ...
''.
Audio tape An audio tape recorder, also known as a tape deck, tape player or tape machine or simply a tape recorder, is a sound recording and reproduction device that records and plays back sounds usually using magnetic tape for storage. In its present ...
, which had the advantage of being fairly light as well as having good audio fidelity, ultimately replaced the bulkier wire recorders. The term "electronic music" (which first came into use during the 1930s) came to include the tape recorder as an essential element: "electronically produced sounds recorded on tape and arranged by the composer to form a musical composition". It was also indispensable to
Musique concrète Musique concrète (; ): " problem for any translator of an academic work in French is that the language is relatively abstract and theoretical compared to English; one might even say that the mode of thinking itself tends to be more schematic, ...
. Tape also gave rise to the first, analogue, sample-playback keyboards, the
Chamberlin The Chamberlin is an electro-mechanical keyboard instrument that was a precursor to the Mellotron. It was developed and patented by the American inventor Harry Chamberlin from 1949 to 1956, when the first model was introduced. There are severa ...
and its more famous successor the
Mellotron The Mellotron is an electro-mechanical musical instrument developed in Birmingham, England, in 1963. It is played by pressing its keys, each of which pushes a length of magnetic tape against a capstan, which pulls it across a playback head. A ...
, an electro-mechanical, polyphonic keyboard originally developed and built in Birmingham, England in the early 1960s.


Sound sequencer

During the 1940s–1960s,
Raymond Scott Raymond Scott (born Harry Warnow; September 10, 1908 – February 8, 1994) was an American composer, band leader, pianist, record producer, and inventor of electronic instruments. Though Scott never scored cartoon soundtracks, his music is ...
, an American composer of electronic music, invented various kind of music sequencers for his electric compositions. Step sequencers played rigid patterns of notes using a grid of (usually) 16 buttons, or steps, each step being 1/16 of a
measure Measure may refer to: * Measurement, the assignment of a number to a characteristic of an object or event Law * Ballot measure, proposed legislation in the United States * Church of England Measure, legislation of the Church of England * Mea ...
. These patterns of notes were then chained together to form longer compositions. Software sequencers were continuously utilized since the 1950s in the context of
computer music Computer music is the application of computing technology in music composition, to help human composers create new music or to have computers independently create music, such as with algorithmic composition programs. It includes the theory and ap ...
, including computer-''played'' music (software sequencer), computer-''composed'' music (
music synthesis A synthesizer (also spelled synthesiser) is an electronic musical instrument that generates audio signals. Synthesizers typically create sounds by generating waveforms through methods including subtractive synthesis, additive synthesis and ...
), and computer ''sound generation'' (
sound synthesis A synthesizer (also spelled synthesiser) is an electronic musical instrument that generates audio signals. Synthesizers typically create sounds by generating waveforms through methods including subtractive synthesis, additive synthesis and f ...
).


Digital era 1980–2000


Digital synthesis

The first
digital synthesizer A digital synthesizer is a synthesizer that uses digital signal processing (DSP) techniques to make musical sounds. This in contrast to older analog synthesizers, which produce music using analog electronics, and samplers, which play back digit ...
s were academic experiments in sound synthesis using digital computers.
FM synthesis Frequency modulation synthesis (or FM synthesis) is a form of sound synthesis whereby the frequency of a waveform is changed by modulating its frequency with a modulator. The frequency of an oscillator is altered "in accordance with the amplitud ...
was developed for this purpose; as a way of generating complex sounds digitally with the smallest number of computational operations per sound sample. In 1983
Yamaha Yamaha may refer to: * Yamaha Corporation, a Japanese company with a wide range of products and services, established in 1887. The company is the largest shareholder of Yamaha Motor Company (below). ** Yamaha Music Foundation, an organization estab ...
introduced the first stand-alone digital synthesizer, the
DX-7 The Yamaha DX7 is a synthesizer manufactured by the Yamaha Corporation from 1983 to 1989. It was the first successful digital synthesizer and is one of the best-selling synthesizers in history, selling more than 200,000 units. In the early 1980 ...
. It used frequency modulation synthesis (FM synthesis), first developed by
John Chowning John M. Chowning (; born August 22, 1934 in Salem, New Jersey) is an American composer, musician, discoverer, and professor best known for his work at Stanford University, the founding of CCRMA - Center for Computer Research in Music and Acou ...
at
Stanford University Stanford University, officially Leland Stanford Junior University, is a private research university in Stanford, California. The campus occupies , among the largest in the United States, and enrolls over 17,000 students. Stanford is consider ...
during the late sixties. Chowning exclusively licensed his
FM synthesis Frequency modulation synthesis (or FM synthesis) is a form of sound synthesis whereby the frequency of a waveform is changed by modulating its frequency with a modulator. The frequency of an oscillator is altered "in accordance with the amplitud ...
patent to Yamaha in 1975. Yamaha subsequently released their first FM synthesizers, the GS-1 and GS-2, which were costly and heavy. There followed a pair of smaller, preset versions, the CE20 and CE25 Combo Ensembles, targeted primarily at the home organ market and featuring four-octave keyboards. Yamaha's third generation of digital synthesizers was a commercial success; it consisted of the
DX7 The Yamaha DX7 is a synthesizer manufactured by the Yamaha Corporation from 1983 to 1989. It was the first successful digital synthesizer and is one of the best-selling synthesizers in history, selling more than 200,000 units. In the early 19 ...
and DX9 (1983). Both models were compact, reasonably priced, and dependent on custom digital integrated circuits to produce FM tonalities. The DX7 was the first mass market all-digital synthesizer. It became indispensable to many music artists of the 1980s, and demand soon exceeded supply. The DX7 sold over 200,000 units within three years. The DX series was not easy to program but offered a detailed, percussive sound that led to the demise of the electro-mechanical
Rhodes piano The Rhodes piano (also known as the Fender Rhodes piano) is an electric piano invented by Harold Rhodes, which became popular in the 1970s. Like a conventional piano, the Rhodes generates sound with keys and hammers, but instead of strings, t ...
, which was heavier and larger than a DX synth. Following the success of FM synthesis Yamaha signed a contract with Stanford University in 1989 to develop
digital waveguide synthesis Digital waveguide synthesis is the synthesis of audio using a digital waveguide. Digital waveguides are efficient computational models for physical media through which acoustic waves propagate. For this reason, digital waveguides constitute a ma ...
, leading to the first commercial physical modeling synthesizer,
Yamaha Yamaha may refer to: * Yamaha Corporation, a Japanese company with a wide range of products and services, established in 1887. The company is the largest shareholder of Yamaha Motor Company (below). ** Yamaha Music Foundation, an organization estab ...
's VL-1, in 1994. The DX-7 was affordable enough for amateurs and young bands to buy, unlike the costly synthesizers of previous generations, which were mainly used by top professionals.


Sampling

The
Fairlight CMI The Fairlight CMI (short for Computer Musical Instrument) is a digital synthesizer, sampler, and digital audio workstation introduced in 1979 by Fairlight. — with links to some Fairlight history and photos It was based on a commercial lic ...
(Computer Musical Instrument), the first polyphonic digital sampler, was the harbinger of sample-based synthesizers. Designed in 1978 by Peter Vogel and
Kim Ryrie Kim Ryrie is an Australian synthesiser inventor who founded the audio technology company Fairlight with Peter Vogel. Career Kim Ryrie was the son of magazine publisher, Colin Ryrie, of Modern Magazines Pty Ltd. Based in Sydney, Ryrie launched ...
and based on a dual
microprocessor A microprocessor is a computer processor where the data processing logic and control is included on a single integrated circuit, or a small number of integrated circuits. The microprocessor contains the arithmetic, logic, and control circu ...
computer designed by Tony Furse in Sydney, Australia, the Fairlight CMI gave musicians the ability to modify volume, attack, decay, and use special effects like vibrato. Sample
waveform In electronics, acoustics, and related fields, the waveform of a signal is the shape of its graph as a function of time, independent of its time and magnitude scales and of any displacement in time.David Crecraft, David Gorham, ''Electronic ...
s could be displayed on-screen and modified using a
light pen A light pen is a computer input device in the form of a light-sensitive wand used in conjunction with a computer's cathode-ray tube (CRT) display. It allows the user to point to displayed objects or draw on the screen in a similar way to a tou ...
. The Synclavier from New England Digital was a similar system.
Jon Appleton Jon Howard Appleton (January 4, 1939 – January 30, 2022) was an American composer, an educator and a pioneer in electro-acoustic music. His earliest compositions in the medium, e.g. "Chef d'Oeuvre" and "Newark Airport Rock" (1967) attracted at ...
(with Jones and Alonso) invented the Dartmouth Digital Synthesizer, later to become the New England Digital Corp's Synclavier. The
Kurzweil K250 The Kurzweil K250, manufactured by Kurzweil Music Systems, was an early electronic musical instrument which produced sound from sampled sounds compressed in ROM, faster than common mass storage such as a disk drive. Acoustic sounds from bras ...
, first produced in 1983, was also a successful polyphonic digital music synthesizer, noted for its ability to reproduce several instruments synchronously and having a velocity-sensitive keyboard.


Computer music

An important new development was the advent of computers for the purpose of composing music, as opposed to manipulating or creating sounds.
Iannis Xenakis Giannis Klearchou Xenakis (also spelled for professional purposes as Yannis or Iannis Xenakis; el, Γιάννης "Ιωάννης" Κλέαρχου Ξενάκης, ; 29 May 1922 – 4 February 2001) was a Romanian-born Greek-French avant-garde ...
began what is called ''musique stochastique,'' or '' stochastic music'', which is a method of composing that employs mathematical probability systems. Different probability algorithms were used to create a piece under a set of parameters. Xenakis used graph paper and a ruler to aid in calculating the velocity trajectories of
glissando In music, a glissando (; plural: ''glissandi'', abbreviated ''gliss.'') is a glide from one pitch to another (). It is an Italianized musical term derived from the French ''glisser'', "to glide". In some contexts, it is distinguished from the co ...
for his orchestral composition ''Metastasis'' (1953–54), but later turned to the use of computers to compose pieces like ''ST/4'' for string quartet and ''ST/48'' for orchestra (both 1962). The impact of computers continued in 1956.
Lejaren Hiller Lejaren Arthur Hiller Jr. (February 23, 1924, New York City – January 26, 1994, Buffalo, New York)Lejaren Hi ...
and
Leonard Issacson Leonard Maxwell Isaacson (born 1925) is an American chemist and composer. Isaacson collaborated with Lejaren Hiller on the computer-programmed acoustic composition, ''Illiac Suite'' (1957).
composed ''
Illiac Suite ''Illiac Suite'' (later retitled String Quartet No. 4)Andrew Stiller, "Hiller, Lejaren (Arthur)", ''Grove Music Online'' (reviewed December 3, 2010; accessed December 14, 2014). is a 1957 composition for string quartet which is generally agreed t ...
'' for
string quartet The term string quartet can refer to either a type of musical composition or a group of four people who play them. Many composers from the mid-18th century onwards wrote string quartets. The associated musical ensemble consists of two violinists ...
, the first complete work of computer-assisted composition using
algorithm In mathematics and computer science, an algorithm () is a finite sequence of rigorous instructions, typically used to solve a class of specific Computational problem, problems or to perform a computation. Algorithms are used as specificat ...
ic composition. In 1957,
Max Mathews Max Vernon Mathews (November 13, 1926 in Columbus, Nebraska, USA – April 21, 2011 in San Francisco, CA, USA) was a pioneer of computer music. Biography Mathews studied electrical engineering at the California Institute of Technology and the Ma ...
at
Bell Lab Nokia Bell Labs, originally named Bell Telephone Laboratories (1925–1984), then AT&T Bell Laboratories (1984–1996) and Bell Labs Innovations (1996–2007), is an American industrial research and scientific development company owned by mul ...
wrote MUSIC-N series, a first computer program family for generating digital audio waveforms through direct synthesis. Then
Barry Vercoe Barry Lloyd Vercoe (born 1937) is a New Zealand-born computer scientist and composer. He is best known as the inventor of Csound, a music synthesis language with wide usage among computer music composers. SAOL, the underlying language for th ...
wrote MUSIC 11 based on MUSIC IV-BF, a next-generation music synthesis program (later evolving into
csound Csound is a domain-specific computer programming language for audio programming. It is called Csound because it is written in C, as opposed to some of its predecessors. It is free software, available under the LGPL-2.1-or-later. Csound was or ...
, which is still widely used). In mid 80s,
Miller Puckette Miller Smith Puckette (born 1959) is the associate director of the Center for Research in Computing and the Arts as well as a professor of music at the University of California, San Diego, where he has been since 1994. Puckette is known for aut ...
at
IRCAM IRCAM (French: ''Ircam, '', English: Institute for Research and Coordination in Acoustics/Music) is a French institute dedicated to the research of music and sound, especially in the fields of avant garde and electro-acoustical art music. It is ...
developed graphic signal-processing software for 4X called Max (after
Max Mathews Max Vernon Mathews (November 13, 1926 in Columbus, Nebraska, USA – April 21, 2011 in San Francisco, CA, USA) was a pioneer of computer music. Biography Mathews studied electrical engineering at the California Institute of Technology and the Ma ...
), and later ported it to
Macintosh The Mac (known as Macintosh until 1999) is a family of personal computers designed and marketed by Apple Inc., Apple Inc. Macs are known for their ease of use and minimalist designs, and are popular among students, creative professionals, and ...
(with
Dave Zicarelli Dave may refer to: Film, television, and theater * ''Dave'' (film), a 1993 film starring Kevin Kline and Sigourney Weaver * ''Dave'' (musical), a 2018 stage musical adaptation of the film * Dave (TV channel), a digital television channel in the ...
extending it for
Opcode In computing, an opcode (abbreviated from operation code, also known as instruction machine code, instruction code, instruction syllable, instruction parcel or opstring) is the portion of a machine language instruction that specifies the operat ...
) for real-time
MIDI MIDI (; Musical Instrument Digital Interface) is a technical standard that describes a communications protocol, digital interface, and electrical connectors that connect a wide variety of electronic musical instruments, computers, and re ...
control, bringing algorithmic composition availability to most composers with modest computer programming background.


MIDI

In 1980, a group of musicians and music merchants met to standardize an interface by which new instruments could communicate control instructions with other instruments and the prevalent microcomputer. This standard was dubbed MIDI (
Musical Instrument Digital Interface MIDI (; Musical Instrument Digital Interface) is a technical standard that describes a communications protocol, digital interface, and electrical connectors that connect a wide variety of electronic musical instruments, computers, and re ...
). A paper was authored by Dave Smith of
Sequential Circuits Sequential is an American synthesizer company founded in 1974 as Sequential Circuits by Dave Smith. In 1978, Sequential released the Prophet-5, the first programmable polyphonic synthesizer; it became a market leader and industry standard, use ...
and proposed to the
Audio Engineering Society The Audio Engineering Society (AES) is a professional body for engineers, scientists, other individuals with an interest or involvement in the professional audio industry. The membership largely comprises engineers developing devices or products ...
in 1981. Then, in August 1983, the MIDI Specification 1.0 was finalized. The advent of MIDI technology allows a single keystroke, control wheel motion, pedal movement, or command from a microcomputer to activate every device in the studio remotely and in synchrony, with each device responding according to conditions predetermined by the composer. MIDI instruments and software made powerful control of sophisticated instruments easily affordable by many studios and individuals. Acoustic sounds became reintegrated into studios via sampling and sampled-ROM-based instruments.


Modern electronic musical instruments

The increasing power and decreasing cost of sound-generating electronics (and especially of the personal computer), combined with the standardization of the
MIDI MIDI (; Musical Instrument Digital Interface) is a technical standard that describes a communications protocol, digital interface, and electrical connectors that connect a wide variety of electronic musical instruments, computers, and re ...
and
Open Sound Control Open Sound Control (OSC) is a protocol for networking sound synthesizers, computers, and other multimedia devices for purposes such as musical performance or show control. OSC's advantages include interoperability, accuracy, flexibility and enhan ...
musical performance description languages, has facilitated the separation of musical instruments into music controllers and music synthesizers. By far the most common musical controller is the
musical keyboard A musical keyboard is the set of adjacent depressible levers or keys on a musical instrument. Keyboards typically contain keys for playing the twelve notes of the Western musical scale, with a combination of larger, longer keys and smaller, sho ...
. Other controllers include the
radiodrum The Radiodrum or radio-baton is a musical instrument played in three-dimensional space using two mallets (snare drum sticks with wires). It was developed at Bell Labs in the 1980s (and patented), originally to be a three-dimensional computer mou ...
, Akai's EWI and Yamaha's WX wind controllers, the guitar-like SynthAxe, th
BodySynth
the
Buchla Thunder Buchla Thunder is one of many in the family of MIDI controllers consisting of tactile control surfaces, which are manipulated by hand. Developed by electronic instrument designer Don Buchla in 1989, Thunder is a musical instrument controller with ...
, the
Continuum Fingerboard The Continuum Fingerboard or Haken Continuum is a music performance controller and synthesizer developed by Lippold Haken, a professor of Electrical and Computer Engineering at the University of Illinois, and sold by Haken Audio, located in Cham ...
, the
Roland Octapad Roland Octapad is a range of MIDI electronic drum percussion controllers produced by the Roland Corporation. Roland Pad-8 The first model, introduced in 1985, was the Pad-8. Originally to be called MPC-8 (MIDI Percussion Controller 8), but was ren ...
, various
isomorphic keyboards An isomorphic keyboard is a musical input device consisting of a two-dimensional grid of note-controlling elements (such as buttons or keys) on which any given sequence and/or combination of musical intervals has the "same shape" on the keyboard whe ...
including the Thummer, and Kaossilator Pro, and kits like
I-CubeX I-CubeX comprises a system of sensors, actuators and interfaces that are configured by a personal computer. Using MIDI, Bluetooth or the Universal Serial Bus (USB) as the basis for all communication, the complexity is managed behind a variety of so ...
.


Reactable

The Reactable is a round translucent table with a
backlit A backlight is a form of illumination used in liquid crystal displays (LCDs). As LCDs do not produce light by themselves—unlike, for example, cathode ray tube (CRT), plasma (PDP) or OLED displays—they need illumination ( ambient light or a ...
interactive display. By placing and manipulating blocks called ''tangibles'' on the table surface, while interacting with the visual display via finger gestures, a virtual
modular synthesizer Modular synthesizers are synthesizers composed of separate modules for different functions. The modules can be connected together by the user to create a patch. The outputs from the modules may include audio signals, analog control voltages, o ...
is operated, creating music or sound effects.


Percussa AudioCubes

AudioCubes are autonomous wireless cubes powered by an internal computer system and rechargeable battery. They have internal RGB lighting, and are capable of detecting each other's location, orientation and distance. The cubes can also detect distances to the user's hands and fingers. Through interaction with the cubes, a variety of music and sound software can be operated. AudioCubes have applications in sound design, music production, DJing and live performance.


Kaossilator

The Kaossilator and Kaossilator Pro are compact instruments where the position of a finger on the touch pad controls two note-characteristics; usually the pitch is changed with a left-right motion and the tonal property, filter or other parameter changes with an up-down motion. The touch pad can be set to different musical scales and keys. The instrument can record a repeating loop of adjustable length, set to any tempo, and new loops of sound can be layered on top of existing ones. This lends itself to electronic dance-music but is more limited for controlled sequences of notes, as the pad on a regular Kaossilator is featureless.


Eigenharp

The Eigenharp is a large instrument resembling a
bassoon The bassoon is a woodwind instrument in the double reed family, which plays in the tenor and bass ranges. It is composed of six pieces, and is usually made of wood. It is known for its distinctive tone color, wide range, versatility, and virtuo ...
, which can be interacted with through big buttons, a drum sequencer and a mouthpiece. The sound processing is done on a separate computer.


XTH Sense

The XTH Sense is a wearable instrument that uses muscle sounds from the human body (known as
mechanomyogram The mechanomyogram (MMG) is the mechanical signal observable from the surface of a muscle when the muscle is contracted. At the onset of muscle contraction, gross changes in the muscle shape cause a large peak in the MMG. Subsequent vibrations are d ...
) to make music and sound effects. As a performer moves, the body produces muscle sounds that are captured by a chip microphone worn on arm or legs. The muscle sounds are then live sampled using a dedicated software program and a library of modular audio effects. The performer controls the live sampling parameters by weighing force, speed and articulation of the movement.


AlphaSphere

The AlphaSphere is a spherical instrument that consists of 48 tactile pads that respond to pressure as well as touch. Custom software allows the pads to be indefinitely programmed individually or by groups in terms of function, note, and pressure parameter among many other settings. The primary concept of the AlphaSphere is to increase the level of expression available to electronic musicians, by allowing for the playing style of a musical instrument.


Chip music

Chiptune Chiptune, also known as chip music or 8-bit music, is a style of synthesized electronic music made using the programmable sound generator (PSG) sound chips or synthesizers in vintage arcade machines, computers and video game consoles. The t ...
, chipmusic, or chip music is music written in sound formats where many of the sound textures are synthesized or sequenced in real time by a
computer A computer is a machine that can be programmed to Execution (computing), carry out sequences of arithmetic or logical operations (computation) automatically. Modern digital electronic computers can perform generic sets of operations known as C ...
or
video game console A video game console is an electronic device that Input/output, outputs a video signal or image to display a video game that can be played with a game controller. These may be home video game console, home consoles, which are generally placed i ...
sound chip A sound chip is an integrated circuit (chip) designed to produce audio signals through digital, analog or mixed-mode electronics. Sound chips are typically fabricated on metal–oxide–semiconductor (MOS) mixed-signal chips that process ...
, sometimes including sample-based synthesis and low bit sample playback. Many chip music devices featured synthesizers in tandem with low rate sample playback.


DIY culture

During the late 1970s and early 1980s,
DIY "Do it yourself" ("DIY") is the method of building, modifying, or repairing things by oneself without the direct aid of professionals or certified experts. Academic research has described DIY as behaviors where "individuals use raw and sem ...
(Do it yourself) designs were published in hobby electronics magazines (notably the Formant modular synth, a DIY clone of the Moog system, published by
Elektor :''Elektor (ἠλέκτωρ) is also an ancient Greek name or epithet of the Sun, see Helios.'' ''Elektor'', also known as ''Elektor Magazine'', is a monthly magazine about all aspects of electronics, originally published in the Netherlands as ''E ...
) and kits were supplied by companies such as Paia in the US, and Maplin Electronics in the UK.


Circuit bending

In 1966,
Reed Ghazala Qubais Reed Ghazala (born 1953), an American author, photographer, composer, musician and experimental instrument builder, is recognized as the "father of circuit bending," having discovered the technique in 1966, pioneered it, named it, and taug ...
discovered and began to teach math " circuit bending"—the application of the creative short circuit, a process of chance short-circuiting, creating experimental electronic instruments, exploring sonic elements mainly of timbre and with less regard to pitch or rhythm, and influenced by
John Cage John Milton Cage Jr. (September 5, 1912 – August 12, 1992) was an American composer and music theorist. A pioneer of indeterminacy in music, electroacoustic music, and non-standard use of musical instruments, Cage was one of the leading fi ...
’s
aleatoric music Aleatoric music (also aleatory music or chance music; from the Latin word ''alea'', meaning "dice") is music in which some element of the composition is left to chance, and/or some primary element of a composed work's realization is left to the ...
concept. Much of this manipulation of circuits directly, especially to the point of destruction, was pioneered by
Louis and Bebe Barron Bebe Barron ( – ) and Louis Barron ( – ) were two American pioneers in the field of electronic music. They are credited with writing the first electronic music for magnetic tape composed in the United States, and the first entirely ele ...
in the early 1950s, such as their work with
John Cage John Milton Cage Jr. (September 5, 1912 – August 12, 1992) was an American composer and music theorist. A pioneer of indeterminacy in music, electroacoustic music, and non-standard use of musical instruments, Cage was one of the leading fi ...
on the ''
Williams Mix ''Williams Mix'' (1951–1953) is a 4'15" musique concrete composition by John Cage for eight simultaneously played independent quarter-inch magnetic tapes. The first octophonic music, the piece was created by Cage with the assistance of Earle B ...
'' and especially in the soundtrack to
Forbidden Planet ''Forbidden Planet'' is a 1956 American science fiction film from Metro-Goldwyn-Mayer, produced by Nicholas Nayfack, and directed by Fred M. Wilcox (director), Fred M. Wilcox from a script by Cyril Hume that was based on an original film story ...
. Modern circuit bending is the creative customization of the circuits within electronic devices such as low
voltage Voltage, also known as electric pressure, electric tension, or (electric) potential difference, is the difference in electric potential between two points. In a static electric field, it corresponds to the work needed per unit of charge to m ...
, battery-powered
guitar effects An effects unit or effects pedal is an electronic device that alters the sound of a musical instrument or other audio source through audio signal processing. Common effects include distortion/overdrive, often used with electric guitar in ele ...
, children's
toy A toy or plaything is an object that is used primarily to provide entertainment. Simple examples include toy blocks, board games, and dolls. Toys are often designed for use by children, although many are designed specifically for adults and pet ...
s and small digital
synthesizer A synthesizer (also spelled synthesiser) is an electronic musical instrument that generates audio signals. Synthesizers typically create sounds by generating waveforms through methods including subtractive synthesis, additive synthesis and ...
s to create new musical or visual instruments and sound generators. Emphasizing spontaneity and randomness, the techniques of circuit bending have been commonly associated with noise music, though many more conventional contemporary musicians and musical groups have been known to experiment with "bent" instruments. Circuit bending usually involves dismantling the machine and adding components such as switches and
potentiometer A potentiometer is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider. If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat. The measuring instrume ...
s that alter the circuit. With the revived interest for analogue synthesizer circuit bending became a cheap solution for many experimental musicians to create their own individual analogue sound generators. Nowadays many schematics can be found to build noise generators such as the
Atari Punk Console Forrest M. Mims III is an American amateur scientist,'Country Scientist' starting co ...
or the Dub Siren as well as simple modifications for children toys such as the famous Speak & Spell that are often modified by circuit benders.


Modular synthesizers

The modular synthesizer is a type of synthesizer consisting of separate interchangeable modules. These are also available as kits for hobbyist DIY constructors. Many hobbyist designers also make available bare PCB boards and front panels for sale to other hobbyists.


2010s

According to
forum post
in December 2010, Sixense Entertainment is working on musical control with the Sixense TrueMotion motion controller. Immersive virtual musical instruments, or
immersive virtual instrument Immersion may refer to: The arts * "Immersion", a 2012 story by Aliette de Bodard * ''Immersion'', a French comic book series by Léo Quievreux#Immersion, Léo Quievreux * Immersion (album), ''Immersion'' (album), the third album by Australian gro ...
s for music and sound aim to represent musical events and sound parameters in a
virtual reality Virtual reality (VR) is a simulated experience that employs pose tracking and 3D near-eye displays to give the user an immersive feel of a virtual world. Applications of virtual reality include entertainment (particularly video games), educ ...
so that they can be perceived not only through auditory feedback but also visually in 3D and possibly through tactile as well as haptic feedback, allowing the development of novel interaction metaphors beyond manipulation such as prehension.


See also

*
Electronic music Electronic music is a genre of music that employs electronic musical instruments, digital instruments, or circuitry-based music technology in its creation. It includes both music made using electronic and electromechanical means ( electroac ...
*
Experimental musical instrument An experimental musical instrument (or custom-made instrument) is a musical instrument that modifies or extends an existing instrument or class of instruments, or defines or creates a new class of instrument. Some are created through simple modi ...
*
Live electronic music Live electronic music (also known as live electronics) is a form of music that can include traditional electronic sound-generating devices, modified electric musical instruments, hacked sound generating technologies, and computers. Initially the pr ...
* Visual Music ;Organizations *
STEIM STEIM (STudio for Electro Instrumental Music) was a center for research and development of new musical instruments in the electronic performing arts, located in Amsterdam, Netherlands. Beginning in the 1970's, STEIM became known as a pioneering cen ...
;Technologies *
Oscilloscope An oscilloscope (informally a scope) is a type of electronic test instrument that graphically displays varying electrical voltages as a two-dimensional plot of one or more signals as a function of time. The main purposes are to display repetiti ...
*
Stereophonic sound Stereophonic sound, or more commonly stereo, is a method of sound reproduction that recreates a multi-directional, 3-dimensional audible perspective. This is usually achieved by using two independent audio channels through a configuration ...
;Individual techniques *
Chiptune Chiptune, also known as chip music or 8-bit music, is a style of synthesized electronic music made using the programmable sound generator (PSG) sound chips or synthesizers in vintage arcade machines, computers and video game consoles. The t ...
* Circuit bending ;Instrument families * Drum machine *
Synthesizer A synthesizer (also spelled synthesiser) is an electronic musical instrument that generates audio signals. Synthesizers typically create sounds by generating waveforms through methods including subtractive synthesis, additive synthesis and ...
**
Analog synthesizer An analog (or analogue) synthesizer is a synthesizer that uses analog circuits and analog signals to generate sound electronically. The earliest analog synthesizers in the 1920s and 1930s, such as the Trautonium, were built with a variety of ...
*
Vocoder A vocoder (, a portmanteau of ''voice'' and ''encoder'') is a category of speech coding that analyzes and synthesizes the human voice signal for audio data compression, multiplexing, voice encryption or voice transformation. The vocoder was ...
;Individual instruments (historical) * Electronic Sackbut *
Continuum Fingerboard The Continuum Fingerboard or Haken Continuum is a music performance controller and synthesizer developed by Lippold Haken, a professor of Electrical and Computer Engineering at the University of Illinois, and sold by Haken Audio, located in Cham ...
*
Spharophon The Sphärophon or a Spherophone is an electrical musical instrument that was first made as the "Electrophon" around 1921 by Jörg Mager, later modified, renamed and exhibited in 1926. Two variants of the Sphärophon Mager invented two differe ...
;Individual instruments (modern) *
Atari Punk Console Forrest M. Mims III is an American amateur scientist,'Country Scientist' starting co ...
*
Kraakdoos A kraakdoos or cracklebox is a custom-made instrument, in the form of a noise-making electronic device. It is a small box with six metal contacts on top, which generate various unusual sounds and tones when pressed by the performer's fingers. The ...
*
Metronome A metronome, from ancient Greek μέτρον (''métron'', "measure") and νομός (nomós, "custom", "melody") is a device that produces an audible click or other sound at a regular interval that can be set by the user, typically in beats pe ...
*
Razer Hydra The Razer Hydra (previously known as Sixense TrueMotion) is a motion and orientation detection game controller developed by Sixense Entertainment, a company founded in 2007, in partnership with Razer USA. It uses a weak magnetic field to detect ...
;Electronic music-instruments in Indian & Asian traditional music *
Electronic tanpura An electronic tanpura is an electronic instrument that replicates the sound of an Indian string instrument known as the tanpura (tambura), used to provide a constant drone to accompany another's vocal or instrumental melody. Terminology It may ...
*
Shruti box A shruti box (sruti box or surpeti) is an instrument, originating from the Indian subcontinent, that traditionally works on a system of bellows. It is similar to a harmonium and is used to provide a drone in a practice session or concert of In ...


References


External links


120 Years of Electronic Music

A chronology of computer and electronic music (including instruments)

History of Electronic Music
(French)


DIY



Discussion forum at Electro-music.com * Th
Synth-DIY
email list
Ken Stone's Do-It-Yourself Page

Music From Outer Space
Information and parts to self-build a synthesizer.
SDIY wiki
a wiki about DIY electronic musical instruments


Visit-able museums and collections

* Horniman Museum'
music gallery
London, UK. Has one or two synths behind glass.
Moogseum
Asheville, North Carolina, USA
Musical Museum
Brentford, London, UK. Mostly electro-mechanical instruments.
Musical Instrument Museum
Phoenix, Arizona, USA

Berlin, Germany
Swiss Museum & Center for Electronic Music Instruments

The National Music Centre Collection
Canada
Vintage Synthesizer Museum
California, USA * Washington And Lee Universit
Synthesizer Museum
, Washington, USA {{DEFAULTSORT:Electronic Musical Instrument Popular music Electronic dance music Audio engineering