String instruments, stringed instruments, or chordophones are
musical instrument
A musical instrument is a device created or adapted to make musical sounds. In principle, any object that produces sound can be considered a musical instrument—it is through purpose that the object becomes a musical instrument. A person who pl ...
s that produce sound from
vibrating strings
A vibration in a string is a wave. Resonance causes a vibrating string to produce a sound with constant frequency, i.e. constant pitch. If the length or tension of the string is correctly adjusted, the sound produced is a musical tone. Vibrating ...
when a performer plays or sounds the strings in some manner.
Musicians play some string instruments by plucking the
strings
String or strings may refer to:
*String (structure), a long flexible structure made from threads twisted together, which is used to tie, bind, or hang other objects
Arts, entertainment, and media Films
* ''Strings'' (1991 film), a Canadian anim ...
with their fingers or a
plectrum
A plectrum is a small flat tool used for plucking or strumming of a stringed instrument. For hand-held instruments such as guitars and mandolins, the plectrum is often called a pick and is held as a separate tool in the player's hand. In harpsic ...
—and others by hitting the strings with a light wooden hammer or by rubbing the strings with a
bow. In some
keyboard
Keyboard may refer to:
Text input
* Keyboard, part of a typewriter
* Computer keyboard
** Keyboard layout, the software control of computer keyboards and their mapping
** Keyboard technology, computer keyboard hardware and firmware
Music
* Musi ...
instruments, such as the
harpsichord
A harpsichord ( it, clavicembalo; french: clavecin; german: Cembalo; es, clavecín; pt, cravo; nl, klavecimbel; pl, klawesyn) is a musical instrument played by means of a keyboard. This activates a row of levers that turn a trigger mechanism ...
, the musician presses a key that plucks the string. Other musical instruments generate sound by striking the string.
With bowed instruments, the player pulls a rosined horsehair bow across the strings, causing them to vibrate. With a
hurdy-gurdy, the musician cranks a wheel whose rosined edge touches the strings.
Bowed instruments include the
string section instruments of the
orchestra
An orchestra (; ) is a large instrumental ensemble typical of classical music, which combines instruments from different families.
There are typically four main sections of instruments:
* bowed string instruments, such as the violin, viola, c ...
in
Western classical music (
violin
The violin, sometimes known as a ''fiddle'', is a wooden chordophone (string instrument) in the violin family. Most violins have a hollow wooden body. It is the smallest and thus highest-pitched instrument (soprano) in the family in regular ...
,
viola
The viola ( , also , ) is a string instrument that is bow (music), bowed, plucked, or played with varying techniques. Slightly larger than a violin, it has a lower and deeper sound. Since the 18th century, it has been the middle or alto voice of ...
,
cello
The cello ( ; plural ''celli'' or ''cellos'') or violoncello ( ; ) is a Bow (music), bowed (sometimes pizzicato, plucked and occasionally col legno, hit) string instrument of the violin family. Its four strings are usually intonation (music), t ...
and
double bass
The double bass (), also known simply as the bass () (or #Terminology, by other names), is the largest and lowest-pitched Bow (music), bowed (or plucked) string instrument in the modern orchestra, symphony orchestra (excluding unorthodox addit ...
) and a number of other instruments (e.g.,
viol
The viol (), viola da gamba (), or informally gamba, is any one of a family of bowed, fretted, and stringed instruments with hollow wooden bodies and pegboxes where the tension on the strings can be increased or decreased to adjust the pitc ...
s and
gambas used in
early music
Early music generally comprises Medieval music (500–1400) and Renaissance music (1400–1600), but can also include Baroque music (1600–1750). Originating in Europe, early music is a broad musical era for the beginning of Western classical m ...
from the
Baroque music
Baroque music ( or ) refers to the period or dominant style of Western classical music composed from about 1600 to 1750. The Baroque style followed the Renaissance period, and was followed in turn by the Classical period after a short transiti ...
era and
fiddle
A fiddle is a bowed string musical instrument, most often a violin. It is a colloquial term for the violin, used by players in all genres, including classical music. Although in many cases violins and fiddles are essentially synonymous, th ...
s used in many types of
folk music
Folk music is a music genre that includes traditional folk music and the contemporary genre that evolved from the former during the 20th-century folk revival. Some types of folk music may be called world music. Traditional folk music has b ...
). All of the bowed string instruments can also be plucked with the fingers, a technique called "
pizzicato". A wide variety of techniques are used to sound notes on 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 ...
, including plucking with the fingernails or a plectrum, strumming and even "
tapping" on the fingerboard and using
feedback
Feedback occurs when outputs of a system are routed back as inputs as part of a chain of cause-and-effect that forms a circuit or loop. The system can then be said to ''feed back'' into itself. The notion of cause-and-effect has to be handled ...
from a loud,
distorted guitar amplifier to produce a sustained sound. Some string instruments are mainly plucked, such as the
harp
The harp is a stringed musical instrument that has a number of individual strings running at an angle to its soundboard; the strings are plucked with the fingers. Harps can be made and played in various ways, standing or sitting, and in orche ...
and the
electric bass. In the
Hornbostel-Sachs scheme of
musical instrument classification
In organology, the study of musical instruments, many methods of classifying instruments exist. Most methods are specific to a particular cultural group and were developed to serve that culture's musical needs. Culture-based classification method ...
, used in
organology, string instruments are called chordophones. Other examples include the
sitar
The sitar ( or ; ) is a plucked stringed instrument, originating from the Indian subcontinent, used in Hindustani classical music. The instrument was invented in medieval India, flourished in the 18th century, and arrived at its present form in ...
,
rebab
The ''rebab'' ( ar, ربابة, ''rabāba'', variously spelled ''rebap'', ''rubob'', ''rebeb'', ''rababa'', ''rabeba'', ''robab'', ''rubab'', ''rebob'', etc) is the name of several related string instruments that independently spread via I ...
,
banjo
The banjo is a stringed instrument with a thin membrane stretched over a frame or cavity to form a resonator. The membrane is typically circular, and usually made of plastic, or occasionally animal skin. Early forms of the instrument were fashi ...
,
mandolin
A mandolin ( it, mandolino ; literally "small mandola") is a stringed musical instrument in the lute family and is generally plucked with a pick. It most commonly has four courses of doubled strings tuned in unison, thus giving a total of 8 ...
,
ukulele
The ukulele ( ; from haw, ukulele , approximately ), also called Uke, is a member of the lute family of instruments of Portuguese origin and popularized in Hawaii. It generally employs four nylon strings.
The tone and volume of the instrumen ...
, and
bouzouki.
According to
Sachs,
}
In most string instruments, the vibrations are transmitted to the body of the instrument, which often incorporates some sort of hollow or enclosed area. The body of the instrument also vibrates, along with the air inside it. The vibration of the body of the instrument and the enclosed hollow or chamber make the vibration of the string more audible to the performer and audience. The body of most string instruments is hollow. Some, however—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 ...
and other instruments that rely on electronic amplification—may have a solid wood body.
Classification
In
musicology
Musicology (from Greek μουσική ''mousikē'' 'music' and -λογια ''-logia'', 'domain of study') is the scholarly analysis and research-based study of music. Musicology departments traditionally belong to the humanities, although some mu ...
, string instruments are known as chordophones. It is one of the five main divisions of instruments in the
Hornbostel-Sachs scheme of
musical instrument classification
In organology, the study of musical instruments, many methods of classifying instruments exist. Most methods are specific to a particular cultural group and were developed to serve that culture's musical needs. Culture-based classification method ...
.
Hornbostel-Sachs divides chordophones into two main groups: instruments without a
resonator as an integral part of the instrument (which have the classification number 31, also known as simple); and instruments with such a resonator (which have the classification number 32, also known as composite). Most western instruments fall into the second group, but the
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 ...
and
harpsichord
A harpsichord ( it, clavicembalo; french: clavecin; german: Cembalo; es, clavecín; pt, cravo; nl, klavecimbel; pl, klawesyn) is a musical instrument played by means of a keyboard. This activates a row of levers that turn a trigger mechanism ...
fall into the first. Hornbostel and Sachs' criterion for determining which sub-group an instrument falls into is that if the resonator can be removed without destroying the instrument, then it is classified as 31. The idea that the piano's casing, which acts as a resonator, could be removed without destroying the instrument, may seem odd, but if the action and strings of the piano were taken out of its box, it could still be played. This is not true of the violin, because the string passes over a bridge located on the resonator box, so removing the resonator would mean the strings had no tension.
Curt Sachs also broke chordophones into four basic subcategories, "zithers, lutes, lyres and harps."
*
Zithers
Zithers (; , from the Greek word ''cithara'') are a class of stringed instruments. Historically, the name has been applied to any instrument of the psaltery family, or to an instrument consisting of many strings stretched across a thin, flat bo ...
include ''stick zithers'' such as the
musical bow, ''
tube zithers'' with a tube as the resonator such as the
valiha,
raft zithers in which tube zithers are tied into a single "raft," ''board zithers'' including
clavichord and
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 ...
and
dulcimer, and ''long zithers'' (described as combination of half-tube and board zithers) including
Se and
Guzheng
The zheng () or gu zheng (), is a Chinese plucked zither. The modern guzheng commonly has 21, 25, or 26 strings, is long, and is tuned in a major pentatonic scale. It has a large, resonant soundboard made from ''Paulownia'' wood. Other co ...
families.
*
Lutes
A lute ( or ) is any plucked string instrument with a neck and a deep round back enclosing a hollow cavity, usually with a sound hole or opening in the body. It may be either fretted or unfretted.
More specifically, the term "lute" can refer ...
are stringed musical instruments that include a body and "a neck which serves both as a handle and as a means of stretching the strings beyond the body."
The lute family includes not only ''short-necked plucked lutes'' such as the
lute
A lute ( or ) is any plucked string instrument with a neck and a deep round back enclosing a hollow cavity, usually with a sound hole or opening in the body. It may be either fretted or unfretted.
More specifically, the term "lute" can ref ...
,
oud,
pipa
The pipa, pípá, or p'i-p'a () is a traditional Chinese musical instrument, belonging to the plucked category of instruments. Sometimes called the "Chinese lute", the instrument has a pear-shaped wooden body with a varying number of frets rang ...
,
guitar
The guitar is a fretted musical instrument that typically has six strings. It is usually held flat against the player's body and played by strumming or plucking the strings with the dominant hand, while simultaneously pressing selected stri ...
,
citole,
gittern,
mandore
Mandore is a suburb Historical town located 9 km north of Jodhpur city, in the Indian state of Rajasthan.
History
Mandore is an ancient town, and was the seat of the Pratiharas of Mandavyapura, who ruled the region in the 6th century CE ...
,
rubab, and
gambus and ''long-necked plucked lutes'' such as the
tanbura,
swarabat,
bağlama
The ''bağlama'' or ''saz'' is a family of plucked string instruments, long-necked lutes used in Ottoman classical music, Turkish folk music, Turkish Arabesque music, Azerbaijani music, Kurdish music, Armenian music and in parts of Syria, Iraq ...
,
bouzouki,
veena
The ''veena'', also spelled ''vina'' ( sa, वीणा IAST: vīṇā), comprises various chordophone instruments from the Indian subcontinent. Ancient musical instruments evolved into many variations, such as lutes, zithers and arched harps.< ...
,
theorbo
The theorbo is a plucked string instrument of the lute family, with an extended neck and a second pegbox. Like a lute, a theorbo has a curved-back sound box (a hollow box) with a wooden top, typically with a sound hole, and a neck extending ou ...
,
archlute,
pandura,
sitar
The sitar ( or ; ) is a plucked stringed instrument, originating from the Indian subcontinent, used in Hindustani classical music. The instrument was invented in medieval India, flourished in the 18th century, and arrived at its present form in ...
,
setar
A setar ( fa, سهتار, ) is a stringed instrument, a type of lute used in Persian traditional music, played solo or accompanying voice. It is a member of the tanbur family of long-necked lutes with a range of more than two and a half octa ...
, but also ''bowed instruments'' such as the
Yaylı tambur,
rebab
The ''rebab'' ( ar, ربابة, ''rabāba'', variously spelled ''rebap'', ''rubob'', ''rebeb'', ''rababa'', ''rabeba'', ''robab'', ''rubab'', ''rebob'', etc) is the name of several related string instruments that independently spread via I ...
,
erhu, and entire family of
viols
The viol (), viola da gamba (), or informally gamba, is any one of a family of bowed, fretted, and stringed instruments with hollow wooden bodies and pegboxes where the tension on the strings can be increased or decreased to adjust the pitch ...
and
violins
The violin, sometimes known as a ''fiddle'', is a wooden chordophone (string instrument) in the violin family. Most violins have a hollow wooden body. It is the smallest and thus highest-pitched instrument (soprano) in the family in regular ...
.
* The
lyre
The lyre () is a stringed musical instrument that is classified by Hornbostel–Sachs as a member of the lute-family of instruments. In organology, a lyre is considered a yoke lute, since it is a lute in which the strings are attached to a yoke ...
has two arms, which have a "yoke" or crossbar connecting them, and strings between the crossbar and the soundboard.
Sachs divided this into the ''box lyre'' such as the Greek
kithara
The kithara (or Latinized cithara) ( el, κιθάρα, translit=kithāra, lat, cithara) was an ancient Greek musical instrument in the yoke lutes family. In modern Greek the word ''kithara'' has come to mean "guitar", a word which etymologic ...
and the ''bowl lyre'' which used a bowl on its side with skin
soundboard.
* The
harp
The harp is a stringed musical instrument that has a number of individual strings running at an angle to its soundboard; the strings are plucked with the fingers. Harps can be made and played in various ways, standing or sitting, and in orche ...
which has strings vertical to the soundboard.
Earliest string instruments
Dating to around c. 13,000 BC, a cave painting in the
Trois Frères cave in France depicts what some believe is a
musical bow, a hunting bow used as a single-stringed musical instrument.
From the musical bow, families of stringed instruments developed; since each string played a single note, adding strings added new notes, creating
bow harps,
harps
The High Accuracy Radial Velocity Planet Searcher (HARPS) is a high-precision echelle planet-finding spectrograph installed in 2002 on the ESO's 3.6m telescope at La Silla Observatory in Chile. The first light was achieved in February 2003. H ...
and
lyres Yoke lutes, commonly called lyres, are a class of string instruments, subfamily of lutes, indicated with the code 321.2 in the Hornbostel–Sachs classification.
Description
Yoke lutes are defined as instruments with one or more strings, arrange ...
.
In turn, this led to being able to play
dyads and
chords. Another innovation occurred when the bow harp was straightened out and a
bridge
A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually somethi ...
used to lift the strings off the
stick-neck, creating the lute.
This picture of musical bow to harp bow is theory and has been contested. In 1965 Franz Jahnel wrote his criticism stating that the early ancestors of plucked instruments are not currently known.
He felt that the harp bow was a long cry from the sophistication of the civilizations of western Asia in 4000 BC that took the primitive technology and created "technically and artistically well-made harps, lyres, citharas, and lutes."
[
Archaeological digs have identified some of the earliest stringed instruments in Ancient Mesopotamian sites, like the ]lyres of Ur
The Lyres of Ur or Harps of Ur are a group of four stringed instruments excavated in a fragmentary condition at the Royal Cemetery of Ur in modern Iraq from 1922 onwards. They date back to the Early Dynastic III Period of Mesopotamia, between a ...
, which include artifacts over three thousand years old. The development of lyre
The lyre () is a stringed musical instrument that is classified by Hornbostel–Sachs as a member of the lute-family of instruments. In organology, a lyre is considered a yoke lute, since it is a lute in which the strings are attached to a yoke ...
instruments required the technology
Technology is the application of knowledge to reach practical goals in a specifiable and reproducible way. The word ''technology'' may also mean the product of such an endeavor. The use of technology is widely prevalent in medicine, science, ...
to create a tuning mechanism to tighten and loosen the string tension. Lyres with wooden bodies and strings used for plucking or playing with a bow represent key instruments that point towards later harps and violin-type instruments; moreover, Indian instruments from 500 BC have been discovered with anything from 7 to 21 strings.
Lutes
:''See: History of lute-family instruments
Lutes are stringed musical instruments that include a body and "a neck which serves both as a handle and as a means of stretching the strings beyond the body".
The lute family includes not only ''short-necked plucked lutes'' such as the lute, oud ...
''
Musicologists have put forth examples of that 4th-century BC technology, looking at engraved images that have survived. The earliest image showing a lute-like instrument came from Mesopotamia
Mesopotamia ''Mesopotamíā''; ar, بِلَاد ٱلرَّافِدَيْن or ; syc, ܐܪܡ ܢܗܪ̈ܝܢ, or , ) is a historical region of Western Asia situated within the Tigris–Euphrates river system, in the northern part of the F ...
prior to 3000 BC. A cylinder seal from c. 3100 BC or earlier (now in the possession of the British Museum) shows what is thought to be a woman playing a stick lute. From the surviving images, theorists have categorized the Mesopotamian lutes, showing that they developed into a long variety and a short. The line of long lutes may have developed into the tambur
The ''tambur'' (spelled in keeping with TDK conventions) is a fretted string instrument of Turkey and the former lands of the Ottoman Empire. Like the ney, the armudi (lit. pear-shaped) kemençe and the kudüm, it constitutes one of the four in ...
s and pandura. The line of short lutes was further developed to the east of Mesopotamia, in Bactria
Bactria (; Bactrian: , ), or Bactriana, was an ancient region in Central Asia in Amu Darya's middle stream, stretching north of the Hindu Kush, west of the Pamirs and south of the Gissar range, covering the northern part of Afghanistan, southwe ...
, Gandhara
Gandhāra is the name of an ancient region located in the northwestern region of the Indian subcontinent, more precisely in present-day north-west Pakistan and parts of south-east Afghanistan. The region centered around the Peshawar Vall ...
, and Northwest India, and shown in sculpture from the 2nd century BC through the 4th or 5th centuries AD.[ Views 3 & 4 show a musician playing a 4th- to 5th-century lute-like instrument, excavated in Gandhara, and part of a Los Angeles County Art Museum collection of ''Five Celestial Musicians'']
During the medieval era, instrument development varied in different regions of the world. Middle Eastern rebecs represented breakthroughs in terms of shape and strings, with a half a pear shape using three strings. Early versions of the violin and fiddle, by comparison, emerged in Europe through instruments such as the gittern, a four-stringed precursor to the guitar, and basic lute
A lute ( or ) is any plucked string instrument with a neck and a deep round back enclosing a hollow cavity, usually with a sound hole or opening in the body. It may be either fretted or unfretted.
More specifically, the term "lute" can ref ...
s. These instruments typically used catgut (animal intestine) and other materials, including silk, for their strings.
Renaissance to modern
String instrument design was refined during the Renaissance
The Renaissance ( , ) , from , with the same meanings. is a period in European history marking the transition from the Middle Ages to modernity and covering the 15th and 16th centuries, characterized by an effort to revive and surpass ideas ...
and into the Baroque period
The Baroque (, ; ) is a style of architecture, music, dance, painting, sculpture, poetry, and other arts that flourished in Europe from the early 17th century until the 1750s. In the territories of the Spanish and Portuguese empires including t ...
(1600–1750) of musical history. Violins
The violin, sometimes known as a ''fiddle'', is a wooden chordophone (string instrument) in the violin family. Most violins have a hollow wooden body. It is the smallest and thus highest-pitched instrument (soprano) in the family in regular ...
and guitars
The guitar is a fretted musical instrument that typically has six strings. It is usually held flat against the player's body and played by strumming or plucking the strings with the dominant hand, while simultaneously pressing selected stri ...
became more consistent in design and were roughly similar to acoustic guitars of the 2000s. The violins of the Renaissance
The Renaissance ( , ) , from , with the same meanings. is a period in European history marking the transition from the Middle Ages to modernity and covering the 15th and 16th centuries, characterized by an effort to revive and surpass ideas ...
featured intricate woodwork and stringing, while more elaborate bass instruments such as the bandora were produced alongside quill-plucked citterns, and Spanish body guitars.
In the 19th century, string instruments were made more widely available through mass production, with wood string instruments a key part of orchestras – cellos, violas, and upright basses, for example, were now standard instruments for chamber ensembles and smaller orchestras. At the same time, the 19th-century guitar became more typically associated with six-string models, rather than traditional five-string versions.
Major changes to string instruments in the 20th century primarily involved innovations in electronic instrument amplification
An instrument amplifier is an electronic device that converts the often barely audible or purely electronic signal of a musical instrument into a larger electronic signal to feed to a loudspeaker. An instrument amplifier is used with musical inst ...
and electronic music – electric violins were available by the 1920s and were an important part of emerging jazz music trends in the United States. The 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, ...
was widely used in 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 ...
, but as an acoustic instrument, it was not loud enough to be a solo instrument, so these genres mostly used it as an accompaniment
Accompaniment is the musical part which provides the rhythmic and/or harmonic support for the melody or main themes of a song or instrumental piece. There are many different styles and types of accompaniment in different genres and styles ...
rhythm section
A rhythm section is a group of musicians within a music ensemble or band that provides the underlying rhythm, harmony and pulse of the accompaniment, providing a rhythmic and harmonic reference and "beat" for the rest of the band.
The rhythm sec ...
instrument. In big band
A big band or jazz orchestra is a type of musical ensemble of jazz music that usually consists of ten or more musicians with four sections: saxophones, trumpets, trombones, and a rhythm section. Big bands originated during the early 1910s an ...
s of the 1920s, the 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, ...
played backing chords, but it was not loud enough to play solos like the saxophone
The saxophone (often referred to colloquially as the sax) is a type of single-reed woodwind instrument with a conical body, usually made of brass. As with all single-reed instruments, sound is produced when a reed on a mouthpiece vibrates to pr ...
and trumpet
The trumpet is a brass instrument commonly used in classical and jazz ensembles. The trumpet group ranges from the piccolo trumpet—with the highest register in the brass family—to the bass trumpet, pitched one octave below the standard ...
. The development of guitar amplifiers, which contained a power amplifier
An audio power amplifier (or power amp) is an electronic amplifier that amplifies low-power electronic audio signals, such as the signal from a radio receiver or an electric guitar pickup, to a level that is high enough for driving loudspea ...
and 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 " ...
in a wooden cabinet, let jazz guitar
Jazz guitar may refer to either a type of electric guitar or a guitar playing style in jazz, using electric amplification to increase the volume of acoustic guitars.
In the early 1930s, jazz musicians sought to amplify their sound to be hear ...
ists play solos and be heard over a big band. The development of 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 ...
provided guitarists with an instrument that was built to connect to guitar amplifiers. Electric guitars have magnetic pickup
A pickup is a transducer that captures or senses mechanical vibrations produced by musical instruments, particularly stringed instruments such as the electric guitar, and converts these to an electrical signal that is amplified using an instru ...
s, volume control knobs and an output jack.
In the 1960s, larger, more powerful guitar amplifiers were developed, called "stacks". These powerful amplifiers enabled guitarists to perform in rock bands that played in large venues such as stadiums and outdoor music festivals (e.g., Woodstock Music Festival
Woodstock Music and Art Fair, commonly referred to as Woodstock, was a music festival held during August 15–18, 1969, on Max Yasgur's dairy farm in Bethel, New York, United States, southwest of the town of Woodstock, New York, Woodstock. ...
). Along with the development of guitar amplifiers, a large range of electronic effects unit
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 el ...
s, many in small stompbox
A stomp box (or stompbox) is a percussion instrument consisting of a small box placed under the foot, which is tapped or stamped on rhythmically to produce a sound similar to that of a bass drum. A stomp box allows a performer such as a singe ...
pedals were introduced in the 1960s and 1970s, such as fuzz pedal
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 el ...
s, flangers, and phasers enabling performers to create unique new sounds during the psychedelic rock
Psychedelic rock is a rock music Music genre, genre that is inspired, influenced, or representative of psychedelia, psychedelic culture, which is centered on perception-altering hallucinogenic drugs. The music incorporated new electronic sound ...
era. Breakthroughs in electric guitar and basses technologies and playing styles enabled major breakthroughs in pop and rock music in the 1960s and 1970s. The distinctive sound of the amplified 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 ...
was the centerpiece of new genres of music such as blues rock
Blues rock is a fusion music genre that combines elements of blues and rock music. It is mostly an electric ensemble-style music with instrumentation similar to electric blues and rock (electric guitar, electric bass guitar, and drums, sometimes w ...
and jazz-rock fusion
Jazz fusion (also known as fusion and progressive jazz) is a music genre that developed in the late 1960s when musicians combined jazz harmony and improvisation with rock music, funk, and rhythm and blues. Electric guitars, amplifiers, and keyb ...
. The sonic power of the loudly amplified, highly distorted electric guitar was the key element of the early heavy metal music
Heavy metal (or simply metal) is a genre of rock music that developed in the late 1960s and early 1970s, largely in the United Kingdom and United States. With roots in blues rock, psychedelic rock and acid rock, heavy metal bands developed a ...
, with the distorted guitar being used in lead guitar
Lead guitar (also known as solo guitar) is a musical part for a guitar in which the guitarist plays melody lines, instrumental fill passages, guitar solos, and occasionally, some riffs and chords within a song structure. The lead is the featur ...
roles, and with power chords as a rhythm guitar
In music performances, rhythm guitar is a technique and role that performs a combination of two functions: to provide all or part of the rhythmic pulse in conjunction with other instruments from the rhythm section (e.g., drum kit, bass guitar ...
.
The ongoing use of electronic amplification and effects units in string instruments, ranging from traditional instruments like the violin to the new electric guitar, added variety to contemporary classical music
Contemporary classical music is classical music composed close to the present day. At the beginning of the 21st century, it commonly referred to the post-1945 modern forms of post-tonal music after the death of Anton Webern, and included seria ...
performances, and enabled experimentation in the dynamic and timbre (tone colour) range of orchestras, bands, and solo performances.
Types of instruments
Construction
String instruments can be divided into three groups:
;Lute
A lute ( or ) is any plucked string instrument with a neck and a deep round back enclosing a hollow cavity, usually with a sound hole or opening in the body. It may be either fretted or unfretted.
More specifically, the term "lute" can ref ...
s : Instruments that support the strings via a neck
The neck is the part of the body on many vertebrates that connects the head with the torso. The neck supports the weight of the head and protects the nerves that carry sensory and motor information from the brain down to the rest of the body. In ...
and a bout ("gourd"), for instance a guitar, violin, or saz
;Harp
The harp is a stringed musical instrument that has a number of individual strings running at an angle to its soundboard; the strings are plucked with the fingers. Harps can be made and played in various ways, standing or sitting, and in orche ...
s : Instruments that contain the strings within a frame
;Zither
Zithers (; , from the Greek word ''cithara'') are a class of stringed instruments. Historically, the name has been applied to any instrument of the psaltery family, or to an instrument consisting of many strings stretched across a thin, flat bo ...
s : Instruments that have the strings mounted on a body, frame
A frame is often a structural system that supports other components of a physical construction and/or steel frame that limits the construction's extent.
Frame and FRAME may also refer to:
Physical objects
In building construction
*Framing (con ...
or tube
Tube or tubes may refer to:
* ''Tube'' (2003 film), a 2003 Korean film
* ''The Tube'' (TV series), a music related TV series by Channel 4 in the United Kingdom
* "Tubes" (Peter Dale), performer on the Soccer AM television show
* Tube (band), a ...
, such as a guqin
The ''guqin'' (; ) is a plucked seven-string Chinese musical instrument. It has been played since ancient times, and has traditionally been favoured by scholars and literati as an instrument of great subtlety and refinement, as highlighted b ...
, cimbalom, autoharp
An autoharp or chord zither is a string instrument belonging to the zither family. It uses a series of bars individually configured to mute all strings other than those needed for the intended chord. The term ''autoharp'' was once a trademark of ...
, harpsichord
A harpsichord ( it, clavicembalo; french: clavecin; german: Cembalo; es, clavecín; pt, cravo; nl, klavecimbel; pl, klawesyn) is a musical instrument played by means of a keyboard. This activates a row of levers that turn a trigger mechanism ...
, 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 ...
, or valiha
It is also possible to divide the instruments into categories focused on how the instrument is played.
Playing techniques
All string instruments produce sound from one or more vibrating strings, transferred to the air by the body of the instrument (or by a pickup in the case of electronically amplified instruments). They are usually categorised by the technique used to make the strings vibrate (or by the primary technique, in the case of instruments where more than one may apply.) The three most common techniques are plucking, bowing, and striking. An important difference between bowing and plucking is that in the former the phenomenon is periodic so that the overtones are kept in a strictly harmonic relationship to the fundamental.
Plucking
Plucking is a method of playing on instruments such as the veena
The ''veena'', also spelled ''vina'' ( sa, वीणा IAST: vīṇā), comprises various chordophone instruments from the Indian subcontinent. Ancient musical instruments evolved into many variations, such as lutes, zithers and arched harps.< ...
, banjo
The banjo is a stringed instrument with a thin membrane stretched over a frame or cavity to form a resonator. The membrane is typically circular, and usually made of plastic, or occasionally animal skin. Early forms of the instrument were fashi ...
, ukulele
The ukulele ( ; from haw, ukulele , approximately ), also called Uke, is a member of the lute family of instruments of Portuguese origin and popularized in Hawaii. It generally employs four nylon strings.
The tone and volume of the instrumen ...
, guitar, harp, lute
A lute ( or ) is any plucked string instrument with a neck and a deep round back enclosing a hollow cavity, usually with a sound hole or opening in the body. It may be either fretted or unfretted.
More specifically, the term "lute" can ref ...
, mandolin
A mandolin ( it, mandolino ; literally "small mandola") is a stringed musical instrument in the lute family and is generally plucked with a pick. It most commonly has four courses of doubled strings tuned in unison, thus giving a total of 8 ...
, oud, and sitar
The sitar ( or ; ) is a plucked stringed instrument, originating from the Indian subcontinent, used in Hindustani classical music. The instrument was invented in medieval India, flourished in the 18th century, and arrived at its present form in ...
, using either a finger, thumb, or quills (now plastic plectra) to pluck the strings.
Instruments normally played by bowing (see below) may also be plucked, a technique referred to by the Italian term '' pizzicato''.
Bowing
Bowing
Bowing (also called stooping) is the act of lowering the torso and head as a social gesture in direction to another person or symbol. It is most prominent in Asian cultures but it is also typical of nobility and aristocracy in many European coun ...
(Italian: ''arco'') is a method used in some string instruments, including the violin
The violin, sometimes known as a ''fiddle'', is a wooden chordophone (string instrument) in the violin family. Most violins have a hollow wooden body. It is the smallest and thus highest-pitched instrument (soprano) in the family in regular ...
, viola
The viola ( , also , ) is a string instrument that is bow (music), bowed, plucked, or played with varying techniques. Slightly larger than a violin, it has a lower and deeper sound. Since the 18th century, it has been the middle or alto voice of ...
, cello
The cello ( ; plural ''celli'' or ''cellos'') or violoncello ( ; ) is a Bow (music), bowed (sometimes pizzicato, plucked and occasionally col legno, hit) string instrument of the violin family. Its four strings are usually intonation (music), t ...
, and the double bass
The double bass (), also known simply as the bass () (or #Terminology, by other names), is the largest and lowest-pitched Bow (music), bowed (or plucked) string instrument in the modern orchestra, symphony orchestra (excluding unorthodox addit ...
(of the violin family
The violin family of musical instruments was developed in Italy in the 16th century. At the time the name of this family of instruments was viole da braccio which was used to distinguish them from the viol family (viole ''da gamba''). The standa ...
), and the old viol
The viol (), viola da gamba (), or informally gamba, is any one of a family of bowed, fretted, and stringed instruments with hollow wooden bodies and pegboxes where the tension on the strings can be increased or decreased to adjust the pitc ...
family. The bow consists of a stick with a "ribbon" of parallel horse tail hairs stretched between its ends. The hair is coated with rosin so it can grip the string; moving the hair across a string causes a stick-slip phenomenon The stick–slip phenomenon, also known as the slip–stick phenomenon or simply stick–slip, is the spontaneous jerking motion that can occur while two objects are sliding over each other.
Cause
Below is a simple, heuristic description of stick ...
, making the string vibrate, and prompting the instrument to emit sound. Darker grades of rosin grip well in cool, dry climates, but may be too sticky in warmer, more humid weather. Violin and viola players generally use harder, lighter-colored rosin than players of lower-pitched instruments, who tend to favor darker, softer rosin.
The ravanahatha is one of the oldest string instruments. Ancestors of the modern bowed string instruments are the rebab
The ''rebab'' ( ar, ربابة, ''rabāba'', variously spelled ''rebap'', ''rubob'', ''rebeb'', ''rababa'', ''rabeba'', ''robab'', ''rubab'', ''rebob'', etc) is the name of several related string instruments that independently spread via I ...
of the Islamic Empires, the Persian kamanche
The kamancheh (also kamānche or kamāncha) ( fa, کمانچه, az, kamança, hy, Քամանչա, ku, کەمانچە ,kemançe) is an Iranian bowed string instrument used in Persian, Azerbaijani, Armenian, Kurdish, Georgian, Turkmen, and ...
and the Byzantine lira. Other bowed instruments are the rebec, hardingfele, nyckelharpa, kokyū, erhu, igil, sarangi, morin khuur, and K'ni The k'ni, also known as ''mim'' in Cambodia, popularly known as a mouth violin is a mouth resonator fiddle, i.e. a fiddle-like instrument used by the Jarai people in Vietnam and Tampuan people in Cambodia.
Etymology
''K'ni'' is the common word ...
. The hurdy-gurdy is bowed by a wheel. Rarely, the guitar has been played with a bow (rather than plucked) for unique effects.
Striking
The third common method of sound production in stringed instruments is to strike the string. The piano and hammered dulcimer
The hammered dulcimer (also called the hammer dulcimer) is a percussion-stringed instrument which consists of strings typically stretched over a trapezoidal resonant sound board. The hammered dulcimer is set before the musician, who in more trad ...
use this method of sound production. Even though the piano strikes the strings, the use of felt hammers means that the sound that is produced can nevertheless be mellow and rounded, in contrast to the sharp attack produced when a very hard hammer strikes the strings.
Violin family string instrument players are occasionally instructed to strike the string with the stick of the bow, a technique called '' col legno''. This yields a percussive sound along with the pitch of the note. A well-known use of ''col legno'' for orchestral strings is Gustav Holst's "Mars" movement from ''The Planets
''The Planets'', Op. 32, is a seven- movement orchestral suite by the English composer Gustav Holst, written between 1914 and 1917. In the last movement the orchestra is joined by a wordless female chorus. Each movement of the suite is name ...
'' suite.
Other methods
The aeolian harp
An Aeolian harp (also wind harp) is a musical instrument that is played by the wind. Named for Aeolus, the ancient Greek god of the wind, the traditional Aeolian harp is essentially a wooden box including a sounding board, with strings stretched ...
employs a very unusual method of sound production: the strings are excited by the movement of the air.
Some instruments that have strings have an attached keyboard
Keyboard may refer to:
Text input
* Keyboard, part of a typewriter
* Computer keyboard
** Keyboard layout, the software control of computer keyboards and their mapping
** Keyboard technology, computer keyboard hardware and firmware
Music
* Musi ...
that the player presses keys on to trigger a mechanism that sounds the strings, instead of directly manipulating the strings. These include the 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 ...
, the clavichord, and the harpsichord. With these keyboard instrument
A keyboard instrument is a musical instrument played using a keyboard, a row of levers which are pressed by the fingers. The most common of these are the piano, organ, and various electronic keyboards, including synthesizers and digital piano ...
s, strings are occasionally plucked or bowed by hand. Modern 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 ...
s such as 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 ...
wrote music that requires that the player reach inside the piano and pluck the strings directly, "bow" them with bow hair wrapped around the strings, or play them by rolling the bell of a brass instrument
A brass instrument is a musical instrument that produces sound by sympathetic vibration of air in a tubular resonator in sympathy with the vibration of the player's lips. Brass instruments are also called labrosones or labrophones, from Latin a ...
such as a trombone
The trombone (german: Posaune, Italian, French: ''trombone'') is a musical instrument in the Brass instrument, brass family. As with all brass instruments, sound is produced when the player's vibrating lips cause the Standing wave, air column ...
on the array of strings. However, these are relatively rarely used special techniques.
Other keyed string instruments, small enough for a strolling musician to play, include the plucked autoharp
An autoharp or chord zither is a string instrument belonging to the zither family. It uses a series of bars individually configured to mute all strings other than those needed for the intended chord. The term ''autoharp'' was once a trademark of ...
, the bowed nyckelharpa, and the hurdy-gurdy, which is played by cranking a rosined wheel.
Steel-stringed instruments (such as the guitar, bass, violin, etc.) can be played using a magnetic field. An E-Bow
The EBow, short for electronic bow or energy bow, is an electronic device used for playing string instruments, most often the electric guitar. It is manufactured by Heet Sound Products, of Los Angeles, California. It was invented by Greg Heet i ...
is a small hand-held battery-powered device that magnetically excites the strings of an electric string instrument to provide a sustained, singing tone reminiscent of a held bowed violin note.
Third bridge
The Deputy Darcy Castelo de Mendonça Bridge, colloquially known as the Third Bridge (Portuguese: Terceira Ponte), is the second tallest bridge in Brazil, connecting the cities of Vila Velha and Vitória in the state of Espirito Santo. Spannin ...
is a plucking method where the player ''frets'' a string and strikes the side opposite the bridge. The technique is mainly used on electric instruments because these have a pickup that amplifies only the local string vibration. It is possible on acoustic instruments as well, but less effective. For instance, a player might press on the seventh fret
A fret is any of the thin strips of material, usually metal wire, inserted laterally at specific positions along the neck or fretboard of a stringed instrument. Frets usually extend across the full width of the neck. On some historical instrume ...
on a guitar and pluck it at the head side to make a tone resonate at the opposing side. On electric instruments, this technique generates multitone sounds reminiscent of a clock or bell.
Electric string instruments, such as 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 ...
, can also be played without touching the strings by using audio feedback. When an electric guitar is plugged into a loud, powerful guitar amplifier with 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 " ...
and a high level of distortion is intentionally used, the guitar produces sustained high-pitched sounds. By changing the proximity of the guitar to the speaker, the guitarist can produce sounds that cannot be produced with standard plucking and picking techniques. This technique was popularized by Jimi Hendrix
James Marshall "Jimi" Hendrix (born Johnny Allen Hendrix; November 27, 1942September 18, 1970) was an American guitarist, singer and songwriter. Although his mainstream career spanned only four years, he is widely regarded as one of the most ...
and others in the 1960s. It was widely used in psychedelic rock
Psychedelic rock is a rock music Music genre, genre that is inspired, influenced, or representative of psychedelia, psychedelic culture, which is centered on perception-altering hallucinogenic drugs. The music incorporated new electronic sound ...
and heavy metal music
Heavy metal (or simply metal) is a genre of rock music that developed in the late 1960s and early 1970s, largely in the United Kingdom and United States. With roots in blues rock, psychedelic rock and acid rock, heavy metal bands developed a ...
.
Changing the pitch of a vibrating string
There are three ways to change the pitch of a vibrating string. String instruments are tuned by varying a string's tension because adjusting length or mass per unit length is impractical. Instruments with a fingerboard
The fingerboard (also known as a fretboard on fretted instruments) is an important component of most stringed instruments. It is a thin, long strip of material, usually wood, that is laminated to the front of the neck of an instrument. The stri ...
are then played by adjusting the length of the vibrating portion of the strings. The following observations all apply to a string that is infinitely flexible (a theoretical assumption, because in practical applications, strings are not infinitely flexible) strung between two fixed supports. Real strings have finite curvature at the bridge and nut, and the bridge, because of its motion, is not exactly nodes of vibration. Hence the following statements about proportionality are approximations.
Length
Pitch can be adjusted by varying the length
Length is a measure of distance. In the International System of Quantities, length is a quantity with dimension distance. In most systems of measurement a base unit for length is chosen, from which all other units are derived. In the Interna ...
of the string. A longer string results in a lower pitch, while a shorter string results in a higher pitch. A concert harp
The pedal harp (also known as the concert harp) is a large and technologically modern harp, designed primarily for use in art music. It may be played solo, as part of a chamber ensemble, or in an orchestra. It typically has 47 strings with seven ...
has pedals that cause a hard object to make contact with a string to shorten its vibrating length during a performance. The frequency is inversely proportional to the length:
:
A string twice as long produces a tone of half the frequency (one octave lower).
Tension
Pitch can be adjusted by varying the tension of the string. A string with less tension (looser) results in a lower pitch, while a string with greater tension (tighter) results in a higher pitch. Pushing a pedal on a pedal steel guitar
The pedal steel guitar is a Console steel guitar, console-type of steel guitar with pedals and knee levers that change the pitch of certain strings to enable playing more varied and complex music than any previous steel guitar design. Like all s ...
raises the pitch of certain strings by increasing tension on them (stretching) through a mechanical linkage; release of the pedal returns the pitch to the original. Knee levers on the instrument can lower a pitch by releasing (and restoring) tension in the same way. A homemade washtub bass
The washtub bass, or gutbucket, is a stringed instrument used in American folk music that uses a metal washtub as a resonator. Although it is possible for a washtub bass to have four or more strings and tuning pegs, traditional washtub basses hav ...
made out of a length of rope, a broomstick and a washtub can produce different pitches by increasing the tension on the rope (producing a higher pitch) or reducing the tension (producing a lower pitch). The frequency is proportional to the square root of the tension:
:
Linear density
The pitch of a string can also be varied by changing the linear density (mass per unit length) of the string. In practical applications, such as with double bass
The double bass (), also known simply as the bass () (or #Terminology, by other names), is the largest and lowest-pitched Bow (music), bowed (or plucked) string instrument in the modern orchestra, symphony orchestra (excluding unorthodox addit ...
strings or bass 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 ...
strings, extra weight is added to strings by winding them with metal. A string with a heavier metal winding produces a lower pitch than a string of equal length without a metal winding. This can be seen on a 2016-era set of gut strings for double bass. The higher-pitched G string is often made of synthetic material, or sometimes animal intestine, with no metal wrapping. To enable the low E string to produce a much lower pitch with a string of the same length, it is wrapped with many wrappings of thin metal wire. This adds to its mass without making it too stiff. The frequency is inversely proportional to the square root of the linear density:
:
Given two strings of equal length and tension, the string with higher mass per unit length produces the lower pitch.
String length or scale length
The length of the string from nut
Nut often refers to:
* Nut (fruit), fruit composed of a hard shell and a seed, or a collective noun for dry and edible fruits or seeds
* Nut (hardware), fastener used with a bolt
Nut or Nuts may also refer to:
Arts, entertainment, and media Com ...
to bridge
A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually somethi ...
on bowed or plucked instruments ultimately determines the distance between different notes on the instrument. For example, a double bass with its low range needs a scale length of around , whilst a violin scale is only about . On the shorter scale of the violin, the left hand may easily reach a range of slightly more than two octaves without shifting position, while on the bass' longer scale, a single octave or a ninth is reachable in lower positions.
Contact points along the string
In bowed instruments, the bow is normally placed perpendicularly to the string, at a point halfway between the end of the fingerboard and the bridge. However, different bow placements can be selected to change timbre. Application of the bow close to the bridge (known as '' sul ponticello'') produces an intense, sometimes harsh sound, which acoustically emphasizes the upper harmonics. Bowing above the fingerboard ('' sul tasto'') produces a purer tone with less overtone strength, emphasizing the fundamental
Fundamental may refer to:
* Foundation of reality
* Fundamental frequency, as in music or phonetics, often referred to as simply a "fundamental"
* Fundamentalism, the belief in, and usually the strict adherence to, the simple or "fundamental" idea ...
, also known as ''flautando'', since it sounds less reedy and more flute-like.
Bowed instruments pose a challenge to instrument builders, as compared with instruments that are only plucked (e.g., guitar), because on bowed instruments, the musician must be able to play one string at a time if they wish. As such, a bowed instrument must have a curved bridge that makes the "outer" strings lower in height than the "inner" strings. With such a curved bridge, the player can select one string at a time to play. On guitars and lute
A lute ( or ) is any plucked string instrument with a neck and a deep round back enclosing a hollow cavity, usually with a sound hole or opening in the body. It may be either fretted or unfretted.
More specifically, the term "lute" can ref ...
s, the bridge can be flat, because the strings are played by plucking them with the fingers, fingernails or a pick; by moving the fingers or pick to different positions, the player can play different strings. On bowed instruments, the need to play strings individually with the bow also limits the number of strings to about six or seven strings; with more strings, it would be impossible to select individual strings to bow. (Note: bowed strings can also play two bowed notes on two different strings at the same time, a technique called a double stop.) Indeed, on the orchestral string section instruments, four strings are the norm, with the exception of five strings used on some double bass
The double bass (), also known simply as the bass () (or #Terminology, by other names), is the largest and lowest-pitched Bow (music), bowed (or plucked) string instrument in the modern orchestra, symphony orchestra (excluding unorthodox addit ...
es. In contrast, with stringed keyboard instruments, 88 courses are used on a 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 ...
, and even though these strings are arranged on a flat bridge, the mechanism can play any of the notes individually.
Similar timbral distinctions are also possible with plucked string instruments by selecting an appropriate plucking point, although the difference is perhaps more subtle.
In keyboard instruments, the contact point along the string (whether this be hammer, tangent, or plectrum) is a choice made by the instrument designer. Builders use a combination of experience and acoustic theory to establish the right set of contact points.
In harpsichords, often there are two sets of strings of equal length. These "choirs" usually differ in their plucking points. One choir has a "normal" plucking point, producing a canonical harpsichord sound; the other has a plucking point close to the bridge, producing a reedier "nasal" sound rich in upper harmonics.
Production of multiple notes
A single string at a certain tension and length only produces one note. To produce multiple notes, string instruments use one of two methods. One is to add enough strings to cover the required range of different notes (e.g., as with the 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 ...
, which has sets of 88 strings to enable the performer to play 88 different notes). The other is to provide a way to ''stop'' the strings along their length to shorten the part that vibrates, which is the method used in guitar and violin family instruments to produce different notes from the same string. The piano and harp represent the first method, where each note on the instrument has its own string or course
Course may refer to:
Directions or navigation
* Course (navigation), the path of travel
* Course (orienteering), a series of control points visited by orienteers during a competition, marked with red/white flags in the terrain, and corresponding ...
of multiple strings tuned to the same note. (Many notes on a piano are strung with a "choir" of three strings tuned alike, to increase the volume.) A guitar represents the second method—the player's fingers push the string against the fingerboard so that the string is pressed firmly against a metal fret. Pressing the string against a fret while plucking or strumming it shortens the vibrating part and thus produces a different note.
Some zithers combine stoppable (melody) strings with a greater number of "open" harmony or chord strings. On instruments with stoppable strings, such as the violin or guitar, the player can shorten the vibrating length of the string, using their fingers directly (or more rarely through some mechanical device, as in the nyckelharpa and the hurdy-gurdy). Such instruments usually have a fingerboard attached to the neck of the instrument, that provides a hard flat surface the player can stop the strings against. On some string instruments, the fingerboard has fret
A fret is any of the thin strips of material, usually metal wire, inserted laterally at specific positions along the neck or fretboard of a stringed instrument. Frets usually extend across the full width of the neck. On some historical instrume ...
s, raised ridges perpendicular to the strings, that stop the string at precise intervals, in which case the fingerboard is also called a ''fretboard''.
Moving frets during performance is usually impractical. The bridges of a koto, on the other hand, may be moved by the player occasionally in the course of a single piece of music. Many modern Western harps include levers, either directly moved by fingers (on Celtic harps) or controlled by foot pedals (on orchestral harps), to raise the pitch of individual strings by a fixed amount. The Middle Eastern zither, the qanun, is equipped with small levers called ''mandal'' that let each course of multiple strings be incrementally retuned "on the fly" while the instrument is being played. These levers raise or lower the pitch of the string course by a microtone, less than a half step.
Sympathetic strings
Some instruments are employed with sympathetic strings—which are additional strings not meant to be plucked. These strings resonate with the played notes, creating additional tones. Sympathetic strings vibrate naturally when various intervals, such as the unisons or the octave
In music, an octave ( la, octavus: eighth) or perfect octave (sometimes called the diapason) is the interval between one musical pitch and another with double its frequency. The octave relationship is a natural phenomenon that has been refer ...
s of the notes of the sympathetic strings are plucked, bowed or struck. This system is used on the sarangi, the grand 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 ...
, the hardanger fiddle
A Hardanger fiddle ( no, hardingfele) is a traditional stringed instrument considered to be the national instrument of Norway. In modern designs, this type of fiddle is very similar to the violin, though with eight or nine strings (rather than fo ...
and the rubab.
Sound production
Acoustic instruments
A vibrating string strung on a very thick log, as a hypothetical example, would make only a very quiet sound, so string instruments are usually constructed in such a way that the vibrating string is coupled to a hollow resonating chamber, a soundboard, or both. On the violin, for example, the four strings pass over a thin wooden bridge resting on a hollow box (the body of the violin). The normal force applied to the body from the strings is supported in part by a small cylinder of wood called the soundpost
In a string instrument, the sound post or soundpost is a dowel inside the instrument under the treble end of the bridge, spanning the space between the top and back plates and held in place by friction. It serves as a structural support for an arc ...
. The violin body also has two "f-holes" carved on the top. The strings' vibrations are distributed via the bridge and soundpost to all surfaces of the instrument, and are thus made louder by matching of the acoustic impedance. The correct technical explanation is that they allow a better match to the acoustic impedance of the air.
It is sometimes said that the sounding board or soundbox "amplifies" the sound of the strings. In reality, no power amplification occurs, because all of the energy
In physics, energy (from Ancient Greek: ἐνέργεια, ''enérgeia'', “activity”) is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat a ...
to produce sound
In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid.
In human physiology and psychology, sound is the ''reception'' of such waves and their ''perception'' by the ...
comes from the vibrating string. The mechanism is that the sounding board of the instrument provides a larger surface area to create sound wave
In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid.
In human physiology and psychology, sound is the ''reception'' of such waves and their ''perception'' by the ...
s than that of the string and therefore acts as a matching element between the acoustic impedance of the string and that of the surrounding air. A larger vibrating surface can sometimes produce better matching; especially at lower frequencies.
All lute
A lute ( or ) is any plucked string instrument with a neck and a deep round back enclosing a hollow cavity, usually with a sound hole or opening in the body. It may be either fretted or unfretted.
More specifically, the term "lute" can ref ...
type instruments traditionally have a bridge, which holds the string at the proper action height from the fret/finger board at one end of the strings. On acoustic instruments, the bridge performs an equally important function of transmitting string energy into the "sound box" of the instrument, thereby increasing the sound volume. The specific design, and materials used in the construction of the bridge of an instrument, have a dramatic impact upon both the sound and responsiveness of the instrument.
Achieving a tonal characteristic that is effective and pleasing to the player's and listener's ear is something of an art and craft, as well as a science, and the makers of string instruments often seek very high quality woods to this end, particularly spruce
A spruce is a tree of the genus ''Picea'' (), a genus of about 35 species of coniferous evergreen trees in the family Pinaceae, found in the northern temperate and boreal (taiga) regions of the Earth. ''Picea'' is the sole genus in the subfami ...
(chosen for its lightness, strength and flexibility) and maple
''Acer'' () is a genus of trees and shrubs commonly known as maples. The genus is placed in the family Sapindaceae.Stevens, P. F. (2001 onwards). Angiosperm Phylogeny Website. Version 9, June 2008 nd more or less continuously updated since http ...
(a very hard wood). Spruce is used for the sounding boards of instruments from the violin to the piano. Instruments such as the banjo use a drum, covered in natural or synthetic skin as their soundboard.
Acoustic instruments can also be made out of artificial materials, such as carbon fiber
Carbon fiber-reinforced polymers (American English), carbon-fibre-reinforced polymers (Commonwealth English), carbon-fiber-reinforced plastics, carbon-fiber reinforced-thermoplastic (CFRP, CRP, CFRTP), also known as carbon fiber, carbon compo ...
and fiberglass
Fiberglass (American English) or fibreglass (Commonwealth English) is a common type of fiber-reinforced plastic using glass fiber. The fibers may be randomly arranged, flattened into a sheet called a chopped strand mat, or woven into glass cloth ...
(particularly the larger, lower-pitched instruments, such as cellos and basses).
In the early 20th century, the Stroh violin
The Stroh violin or Stroviol is a type of stringed musical instrument that is mechanically amplified by a metal resonator and horn attached to its body. The name Stroviol refers to a violin, but other instruments have been modified with the a ...
used a diaphragm-type resonator and a metal horn to project the string sound, much like early mechanical gramophones. Its use declined beginning about 1920, as electronic amplification through power amplifier
An audio power amplifier (or power amp) is an electronic amplifier that amplifies low-power electronic audio signals, such as the signal from a radio receiver or an electric guitar pickup, to a level that is high enough for driving loudspea ...
s and 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 " ...
s was developed and came into use. String instrument players can electronically amplify their instruments by connecting them to a PA system or a guitar amplifier.
Electronic amplification
Most string instruments can be fitted with piezoelectric or magnetic pickups to convert the string's vibrations into an electrical signal that is amplified and then converted back into sound by loudspeakers. Some players attach a pickup to their traditional string instrument to "electrify" it. Another option is to use a solid-bodied instrument, which reduces unwanted feedback
Feedback occurs when outputs of a system are routed back as inputs as part of a chain of cause-and-effect that forms a circuit or loop. The system can then be said to ''feed back'' into itself. The notion of cause-and-effect has to be handled ...
howls or squeals.
Amplified string instruments can be much louder than their acoustic counterparts, so musicians can play them in relatively loud rock, blues, and jazz ensembles. Amplified instruments can also have their amplified tone modified by using electronic effects such as distortion, reverb, or wah-wah.
Bass-register string instruments such as the double bass and the electric bass are amplified with bass instrument amplifiers that are designed to reproduce low-frequency sounds. To modify the tone of amplified bass instruments, a range of electronic bass effects
Bass effects are electronic effects units that are designed for use with an electric bass and a bass amplifier, or for an upright bass and a bass amp or PA system. Bass effects are commonly available in stompbox-style pedals, which are metal or p ...
are available, such as distortion and chorus.
Symphonic strings
The string instruments usually used in the orchestra
An orchestra (; ) is a large instrumental ensemble typical of classical music, which combines instruments from different families.
There are typically four main sections of instruments:
* bowed string instruments, such as the violin, viola, c ...
, and often called the "symphonic strings" or string section are:
* Violins
The violin, sometimes known as a ''fiddle'', is a wooden chordophone (string instrument) in the violin family. Most violins have a hollow wooden body. It is the smallest and thus highest-pitched instrument (soprano) in the family in regular ...
(divided into two sections—first violins and second violins; these sections play exactly the same instruments; the difference is that the first violins play higher-register lines and the second violins play lower-register parts, accompaniment
Accompaniment is the musical part which provides the rhythmic and/or harmonic support for the melody or main themes of a song or instrumental piece. There are many different styles and types of accompaniment in different genres and styles ...
parts or countermelodies
In music, (German for ''primary voice'') or is the main voice, chief part; i.e., the contrapuntal or melodic line of primary importance, in opposition to . (German for ''secondary voice'') or is the secondary part; i.e., a secondary contrapu ...
)
* Violas
; german: Bratsche
, alt=Viola shown from the front and the side
, image=Bratsche.jpg
, caption=
, background=string
, hornbostel_sachs=321.322-71
, hornbostel_sachs_desc=Composite chordophone sounded by a bow
, range=
, related=
*Violin family ...
* Cello
The cello ( ; plural ''celli'' or ''cellos'') or violoncello ( ; ) is a Bow (music), bowed (sometimes pizzicato, plucked and occasionally col legno, hit) string instrument of the violin family. Its four strings are usually intonation (music), t ...
s
* Double bass
The double bass (), also known simply as the bass () (or #Terminology, by other names), is the largest and lowest-pitched Bow (music), bowed (or plucked) string instrument in the modern orchestra, symphony orchestra (excluding unorthodox addit ...
es
When orchestral instrumentation specifies "strings," it often means this combination of string parts. Orchestral works rarely omit any of these string parts, but often include additional string instruments, especially the concert harp
The pedal harp (also known as the concert harp) is a large and technologically modern harp, designed primarily for use in art music. It may be played solo, as part of a chamber ensemble, or in an orchestra. It typically has 47 strings with seven ...
and piano. In the Baroque orchestra
A Baroque orchestra is an ensemble for mixed instruments that existed during the Baroque era of Western Classical music, commonly identified as 1600–1750. Baroque orchestras are typically much smaller, in terms of the number of performers, than t ...
from the 1600s–1750 (or with modern groups playing early music
Early music generally comprises Medieval music (500–1400) and Renaissance music (1400–1600), but can also include Baroque music (1600–1750). Originating in Europe, early music is a broad musical era for the beginning of Western classical m ...
) harpsichord is almost always used to play the basso continuo
Basso continuo parts, almost universal in the Baroque era (1600–1750), provided the harmonic structure of the music by supplying a bassline and a chord progression. The phrase is often shortened to continuo, and the instrumentalists playing th ...
part (the written-out bass line and improvised chords), and often a theorbo
The theorbo is a plucked string instrument of the lute family, with an extended neck and a second pegbox. Like a lute, a theorbo has a curved-back sound box (a hollow box) with a wooden top, typically with a sound hole, and a neck extending ou ...
or lute
A lute ( or ) is any plucked string instrument with a neck and a deep round back enclosing a hollow cavity, usually with a sound hole or opening in the body. It may be either fretted or unfretted.
More specifically, the term "lute" can ref ...
or 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 ...
. In some classical music, such as the 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 double bass is not typically used; the cello plays the bass role in this literature.
See also
* ""
* List of string instruments
This is a list of string instruments.
Bowed
* Agiarut (Alaska)
* Ainu fiddle (Ainu)
* Ajaeng (Korea)
* Alexander violin (United States)
* Anzad
* apache fiddle (Apache)
* Apkhyarta (Abkhazia)
* Arpeggione
* Banhu (China)
* Baryton
* Bazantar ...
* Luthier
A luthier ( ; AmE also ) is a craftsperson who builds or repairs string instruments that have a neck and a sound box. The word "luthier" is originally French and comes from the French word for lute. The term was originally used for makers o ...
(maker of stringed instruments)
* Musical acoustics
* Ravanahatha
* String instrument extended technique
String instruments are capable of producing a variety of extended technique sounds. These alternative playing techniques have been used extensively since the 20th century. Particularly famous examples of string instrument extended technique can be ...
* String instrument repertoire
This is a list of pages with repertoire for string instruments.
Solo instruments
*Violin:
** Violin solo
**Violin sonatas
**Violin concertos
** Violin duo
*Viola:
**Viola solo
** Viola and piano
**Viola concertos
*Cello:
** Cello solo
** Cello an ...
* String orchestra
A string orchestra is an orchestra consisting solely of a string section made up of the bowed strings used in Western Classical music. The instruments of such an orchestra are most often the following: the violin, which is divided into first ...
* Strings (music)
* Stringed instrument tunings This is a chart of stringed instrument tunings. Instruments are listed alphabetically by their most commonly known name.
Terminology
A Course (music), course may consist of one or more Strings (music), strings.
Courses are listed reading from ...
References
External links
Savart Journal
, an online resource published in collaboration with the Guild of American Luthiers.
Instruments in Depth: The Viola
an online feature presented by Bloomingdale School of Music (2010)
*
A Brief History of String Instruments
{{DEFAULTSORT:String Instrument
Orchestras
Rhythm section