Rhythm (from
Greek
Greek may refer to:
Greece
Anything of, from, or related to Greece, a country in Southern Europe:
*Greeks, an ethnic group.
*Greek language, a branch of the Indo-European language family.
**Proto-Greek language, the assumed last common ancestor ...
, ''rhythmos'', "any regular
recurring
Recurring means occurring repeatedly and can refer to several different things:
Mathematics and finance
*Recurring expense, an ongoing (continual) expenditure
*Repeating decimal, or recurring decimal, a real number in the decimal numeral syste ...
motion,
symmetry") generally means a "
movement marked by the regulated succession of strong and weak elements, or of opposite or different conditions". This general meaning of regular recurrence or pattern in time can apply to a wide variety of cyclical natural phenomena having a
periodicity
Periodicity or periodic may refer to:
Mathematics
* Bott periodicity theorem, addresses Bott periodicity: a modulo-8 recurrence relation in the homotopy groups of classical groups
* Periodic function, a function whose output contains values tha ...
or
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 ...
of anything from microseconds to several seconds (as with the
riff
A riff is a repeated chord progression or refrain in music (also known as an ostinato figure in classical music); it is a pattern, or melody, often played by the rhythm section instruments or solo instrument, that forms the basis or acc ...
in a rock music song); to several minutes or hours, or, at the most extreme, even over many years.
Rhythm is related to and distinguished from pulse, meter, and beats:
In the
performance arts
Performance art is an artwork or art exhibition created through actions executed by the artist or other participants. It may be witnessed live or through documentation, spontaneously developed or written, and is traditionally presented to a pu ...
, rhythm is the timing of events on a human scale; of
musical sounds and silences that occur over time, of the steps of a dance, or the meter of spoken
language
Language is a structured system of communication. The structure of a language is its grammar and the free components are its vocabulary. Languages are the primary means by which humans communicate, and may be conveyed through a variety of ...
and poetry. In some performing arts, such as
hip hop music, the rhythmic delivery of the lyrics is one of the most important elements of the style. Rhythm may also refer to visual presentation, as "timed movement through space" and a common language of
pattern
A pattern is a regularity in the world, in human-made design, or in abstract ideas. As such, the elements of a pattern repeat in a predictable manner. A geometric pattern is a kind of pattern formed of geometric shapes and typically repeated li ...
unites rhythm with geometry. For example,
architects
An architect is a person who plans, designs and oversees the construction of buildings. To practice architecture means to provide services in connection with the design of buildings and the space within the site surrounding the buildings that h ...
often speak of the rhythm of a building, referring to patterns in the spacing of windows, columns, and other elements of the
façade
A façade () (also written facade) is generally the front part or exterior of a building. It is a loan word from the French (), which means ' frontage' or ' face'.
In architecture, the façade of a building is often the most important aspect ...
. In recent years, rhythm and meter have become an important area of research among music scholars. Recent work in these areas includes books by
Maury Yeston
Maury Yeston (born October 23, 1945) is an American composer, lyricist and music theorist.
He is known as the initiator of new Broadway musicals and writing their music and lyrics, as well as a classical orchestral and ballet composer, Yale Uni ...
,
Fred Lerdahl
Alfred Whitford (Fred) Lerdahl (born March 10, 1943, in Madison, Wisconsin) is the Fritz Reiner Professor Emeritus of Musical Composition at Columbia University, and a composer and music theorist best known for his work on musical grammar and co ...
and
Ray Jackendoff
Ray Jackendoff (born January 23, 1945) is an American linguist. He is professor of philosophy, Seth Merrin Chair in the Humanities and, with Daniel Dennett, co-director of the Center for Cognitive Studies at Tufts University. He has always st ...
,
Jonathan Kramer, Christopher Hasty,
Godfried Toussaint
Godfried Theodore Patrick Toussaint (1944 – July 2019) was a Canadian computer scientist, a professor of computer science, and the head of the Computer Science Program at New York University Abu Dhabi (NYUAD) in Abu Dhabi, United Arab Emirates ...
, William Rothstein, Joel Lester, and
Guerino Mazzola
Guerino Bruno Mazzola (born 1947) is a Swiss mathematician, musicologist, jazz pianist as well as a writer.
Education and career
Mazzola obtained his PhD in mathematics at University of Zürich in 1971 under the supervision of Herbert Groß and ...
.
Anthropology
![Traditional indonesian instruments02](https://upload.wikimedia.org/wikipedia/commons/2/26/Traditional_indonesian_instruments02.jpg)
In his television series ''How Music Works'',
Howard Goodall presents theories that human rhythm recalls the regularity with which we walk and the heartbeat. Other research suggests that it does not relate to the heartbeat directly, but rather the speed of emotional affect, which also influences heartbeat. Yet other researchers suggest that since certain features of human music are widespread, it is "reasonable to suspect that beat-based rhythmic processing has ancient evolutionary roots". Justin London writes that musical metre "involves our initial perception as well as subsequent anticipation of a series of beats that we abstract from the rhythm surface of the music as it unfolds in time". The "perception" and "abstraction" of rhythmic measure is the foundation of human instinctive musical participation, as when we divide a series of identical clock-ticks into "tick-tock-tick-tock".
Joseph Jordania recently suggested that the sense of rhythm was developed in the early stages of
hominid evolution by the forces of
natural selection
Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations. Cha ...
. Plenty of animals walk rhythmically and hear the sounds of the heartbeat in the womb, but only humans have the ability to be engaged (
entrained) in rhythmically coordinated vocalizations and other activities. According to Jordania, development of the sense of rhythm was central for the achievement of the specific neurological state of the battle trance, crucial for the development of the effective defense system of early hominids. Rhythmic
war cry
A battle cry or war cry is a yell or chant taken up in battle, usually by members of the same combatant group.
Battle cries are not necessarily articulate (e.g. "Eulaliaaaa!", "Alala"..), although they often aim to invoke patriotic or religious ...
, rhythmic drumming by
shaman
Shamanism is a religious practice that involves a practitioner (shaman) interacting with what they believe to be a spirit world through altered states of consciousness, such as trance. The goal of this is usually to direct spirits or spir ...
s, rhythmic
drilling of the soldiers and contemporary professional combat forces listening to the heavy rhythmic rock music all use the ability of rhythm to unite human individuals into a shared
collective identity where group members put the interests of the group above their individual interests and safety.
Some types of parrots can know rhythm. Neurologist
Oliver Sacks
Oliver Wolf Sacks, (9 July 1933 – 30 August 2015) was a British neurologist, naturalist, historian of science, and writer. Born in Britain, Sacks received his medical degree in 1958 from The Queen's College, Oxford, before moving to the Uni ...
states that
chimpanzees and other animals show no similar appreciation of rhythm yet posits that human affinity for rhythm is fundamental, so that a person's sense of rhythm cannot be lost (e.g. by stroke). "There is not a single report of an animal being trained to tap, peck, or move in synchrony with an auditory beat", Sacks write, "No doubt many pet lovers will dispute this notion, and indeed many animals, from the
Lipizzan
The Lipizzan or Lipizzaner ( hr, Lipicanac, cz, Lipicán, hu, Lipicai, it, Lipizzano, sr, Lipicaner, sl, Lipicanec), is a European horse breed, breed of riding horse developed in the Habsburg Empire in the sixteenth century. It is of Baroqu ...
er horses of the
Spanish Riding School
The Spanish Riding School (german: Spanische Hofreitschule) is an Austrian institution dedicated to the preservation of classical dressage and the training of Lipizzaner horses, based in Vienna, Austria, whose performances in the Hofburg are also ...
of Vienna to performing circus animals appear to 'dance' to music. It is not clear whether they are doing so or are responding to subtle visual or tactile cues from the humans around them." Human rhythmic arts are possibly to some extent rooted in courtship ritual.
![Compound triple drum pattern](https://upload.wikimedia.org/wikipedia/commons/4/44/Compound_triple_drum_pattern.png)
The establishment of a basic beat requires the perception of a regular sequence of distinct short-duration pulses and, as a subjective perception of loudness is relative to background noise levels, a pulse must decay to silence before the next occurs if it is to be really distinct. For this reason, the fast-transient sounds of percussion instruments lend themselves to the definition of rhythm. Musical cultures that rely upon such instruments may develop multi-layered
polyrhythm
Polyrhythm is the simultaneous use of two or more rhythms that are not readily perceived as deriving from one another, or as simple manifestations of the same meter. The rhythmic layers may be the basis of an entire piece of music ( cross-rhyt ...
and simultaneous rhythms in more than one time signature, called
polymeter. Such are the
cross-rhythms of Sub-Saharan Africa and the
interlocking ''kotekan'' rhythms of the
gamelan
Gamelan () ( jv, ꦒꦩꦼꦭꦤ꧀, su, ᮌᮙᮨᮜᮔ᮪, ban, ᬕᬫᭂᬮᬦ᭄) is the traditional ensemble music of the Javanese, Sundanese, and Balinese peoples of Indonesia, made up predominantly of percussive instruments. T ...
.
For information on rhythm in
Indian music
Owing to India's vastness and diversity, Indian music encompasses numerous genres in multiple varieties and forms which include classical music, folk (Bollywood), rock, and pop. It has a history spanning several millennia and developed ove ...
see
Tala (music). For other Asian approaches to rhythm see
Rhythm in Persian music
Understanding the rhythmic aspect of Iranian music is aided by understanding the rhythmic structure of Persian poetry, the old Persian rhythmic cycles and the rhythmic characteristics of improvised and composed music. Analysis of more than fifty ...
,
Rhythm in Arabic music
Rhythms in Arabic music are rich and very diverse, as they cover a huge region and peoples from Northern Africa to Western Asia. Rhymes are mainly analysed by means of rhythmic units called ''awzan'' and ''iqa'at''.
Wazn and Iqa'
A rhythmic pa ...
and
''Usul''—Rhythm in Turkish music and
Dumbek rhythms
Dumbek rhythms are a collection of rhythms that are usually played with hand drums such as the dumbek. These rhythms are various combinations of these three basic sounds:
*Doom (D), produced with the dominant hand striking the sweet spot of the sk ...
.
Terminology
Pulse, beat and measure
![Metric levels](https://upload.wikimedia.org/wikipedia/commons/8/82/Metric_levels.svg)
Most music, dance and oral poetry establishes and maintains an underlying "metric level", a basic unit of time that may be audible or implied, the
pulse
In medicine, a pulse represents the tactile arterial palpation of the cardiac cycle (heartbeat) by trained fingertips. The pulse may be palpated in any place that allows an artery to be compressed near the surface of the body, such as at the n ...
or ''tactus'' of the
mensural level, or ''beat level'', sometimes simply called the
beat
Beat, beats or beating may refer to:
Common uses
* Patrol, or beat, a group of personnel assigned to monitor a specific area
** Beat (police), the territory that a police officer patrols
** Gay beat, an area frequented by gay men
* Battery (c ...
. This consists of a (repeating) series of identical yet distinct
periodic short-duration
stimuli
A stimulus is something that causes a physiological response. It may refer to:
* Stimulation
** Stimulus (physiology), something external that influences an activity
** Stimulus (psychology), a concept in behaviorism and perception
* Stimulus (eco ...
perceived as points in time. The "beat" pulse is not necessarily the fastest or the slowest component of the rhythm but the one that is perceived as fundamental: it has a
tempo
In musical terminology, tempo ( Italian, 'time'; plural ''tempos'', or ''tempi'' from the Italian plural) is the speed or pace of a given piece. In classical music, tempo is typically indicated with an instruction at the start of a piece (ofte ...
to which listeners
entrain as they tap their foot or dance to a piece of music. It is currently most often designated as a crotchet or
quarter note
A quarter note (American) or crotchet ( ) (British) is a musical note played for one quarter of the duration of a whole note (or semibreve). Quarter notes are notated with a filled-in oval note head and a straight, flagless stem. The stem ...
in western notation (see
time signature
The time signature (also known as meter signature, metre signature, or measure signature) is a notational convention used in Western musical notation to specify how many beats (pulses) are contained in each measure (bar), and which note va ...
). Faster levels are ''division levels'', and slower levels are ''multiple levels''.
Maury Yeston
Maury Yeston (born October 23, 1945) is an American composer, lyricist and music theorist.
He is known as the initiator of new Broadway musicals and writing their music and lyrics, as well as a classical orchestral and ballet composer, Yale Uni ...
clarified "Rhythms of recurrence" arise from the interaction of two levels of motion, the faster providing the pulse and the slower organizing the beats into repetitive groups. "Once a metric hierarchy has been established, we, as listeners, will maintain that organization as long as minimal evidence is present".
Unit and gesture
![Rhythmic units](https://upload.wikimedia.org/wikipedia/commons/b/bd/Rhythmic_units.png)
A
durational pattern that synchronises with a
pulse
In medicine, a pulse represents the tactile arterial palpation of the cardiac cycle (heartbeat) by trained fingertips. The pulse may be palpated in any place that allows an artery to be compressed near the surface of the body, such as at the n ...
or pulses on the underlying
metric level may be called a ''rhythmic unit''. These may be classified as:
*Metric – even patterns, such as steady
eighth note
180px, Figure 1. An eighth note with stem extending up, an eighth note with stem extending down, and an eighth rest.
180px, Figure 2. Four eighth notes beamed together.
An eighth note (American) or a quaver ( British) is a musical note pla ...
s or pulses;
*Intrametric – confirming patterns, such as
dotted eighth-
sixteenth note
Figure 1. A 16th note with stem facing up, a 16th note with stem facing down, and a 16th rest.
Figure 2. Four 16th notes beamed together.
In music, a 1/16, sixteenth note (American) or semiquaver ( British) is a note played for half the du ...
and
swing patterns;
*Contrametric – non-confirming, or
syncopated patterns; and
*Extrametric – irregular patterns, such as
tuplet
In music, a tuplet (also irrational rhythm or groupings, artificial division or groupings, abnormal divisions, irregular rhythm, gruppetto, extra-metric groupings, or, rarely, contrametric rhythm) is "any rhythm that involves dividing the beat ...
s.
A rhythmic gesture is any
durational pattern that, in contrast to the rhythmic unit, does not occupy a period of time equivalent to a pulse or pulses on an underlying metric level. It may be described according to its beginning and ending or by the rhythmic units it contains. Rhythms that begin on a strong pulse are ''thetic'', those beginning on a weak pulse are ''anacrustic'' and those beginning after a rest or tied-over note are called ''initial rest''. Endings on a strong pulse are ''strong'', on a weak pulse, ''weak'' and those that end on a strong or weak upbeat are ''upbeat''.
Alternation and repetition
Rhythm is marked by the regulated succession of opposite elements: the
dynamics of the
strong and weak beat, the played beat and the inaudible but implied
rest beat, or the long and short note. As well as perceiving rhythm humans must be able to anticipate it. This depends on
repetition of a pattern that is short enough to memorize.
The alternation of the strong and weak beat is fundamental to the ancient language of poetry, dance and music. The common
poetic term "foot" refers, as in dance, to the
lifting and tapping of the foot in time. In a similar way musicians speak of an
upbeat
Up beat may refer to:
*Upbeat, in music, the last beat in the previous bar which immediately precedes the downbeat
*Anacrusis, a note (or sequence of notes) which precedes the first downbeat in a bar in a musical phrase
* ''Upbeat'' (album), by t ...
and a
downbeat and of the
"on" and "off" beat. These contrasts naturally facilitate a dual hierarchy of rhythm and depend on repeating patterns of duration, accent and rest forming a "pulse-group" that corresponds to the
poetic foot. Normally such pulse-groups are defined by taking the most accented beat as the first and
counting
Counting is the process of determining the number of elements of a finite set of objects, i.e., determining the size of a set. The traditional way of counting consists of continually increasing a (mental or spoken) counter by a unit for every ele ...
the pulses until the next accent. A rhythm that accents another beat and de-emphasises the downbeat as established or assumed from the melody or from a preceding rhythm is called
syncopated rhythm.
Normally, even the most complex of meters may be broken down into a chain of duple and triple pulses either by
addition or division. According to
Pierre Boulez, beat structures beyond four, in western music, are "simply not natural".
Tempo and duration
The tempo of the piece is the speed or frequency of the ''tactus'', a measure of how quickly the beat flows. This is often measured in 'beats per minute' (
bpm): 60 bpm means a speed of one beat per second, a frequency of 1 Hz. A
rhythmic unit
Rhythm (from Greek , ''rhythmos'', "any regular recurring motion, symmetry") generally means a " movement marked by the regulated succession of strong and weak elements, or of opposite or different conditions". This general meaning of regular re ...
is a durational pattern that has a period equivalent to a pulse or several pulses. The duration of any such unit is inversely related to its tempo.
Musical sound may be analyzed on five different time scales, which Moravscik has arranged in order of increasing duration.
*Supershort: a single cycle of an audible wave, approximately – second (30–10,000 Hz or more than 1,800 bpm). These, though rhythmic in nature, are not perceived as separate events but as continuous
musical pitch
Pitch is a perceptual property of sounds that allows their ordering on a frequency-related scale,
or more commonly, pitch is the quality that makes it possible to judge sounds as "higher" and "lower" in the sense associated with musical melodi ...
.
*Short: of the order of one second (1 Hz, 60 bpm, 10–100,000 audio cycles). Musical tempo is generally specified in the range 40 to 240 beats per minute. A continuous pulse cannot be perceived as a musical beat if it is faster than 8–10 per second (8–10 Hz, 480–600 bpm) or slower than 1 per 1.5–2 seconds (0.6–0.5 Hz, 40–30 bpm). Too fast a beat becomes a
drone, too slow a succession of sounds seems unconnected. This time frame roughly corresponds to the human
heart rate
Heart rate (or pulse rate) is the frequency of the heartbeat measured by the number of contractions (beats) of the heart per minute (bpm). The heart rate can vary according to the body's physical needs, including the need to absorb oxygen and excr ...
and to the duration of a single step, syllable or
rhythmic gesture
Rhythm (from Greek , ''rhythmos'', "any regular recurring motion, symmetry") generally means a " movement marked by the regulated succession of strong and weak elements, or of opposite or different conditions". This general meaning of regular rec ...
.
*Medium: ≥ few seconds, this median durational level "defines rhythm in music" as it allows the definition of a rhythmic unit, the arrangement of an entire sequence of accented, unaccented and silent or "
rest
Rest or REST may refer to:
Relief from activity
* Sleep
** Bed rest
* Kneeling
* Lying (position)
* Sitting
* Squatting position
Structural support
* Structural support
** Rest (cue sports)
** Armrest
** Headrest
** Footrest
Arts and enter ...
" pulses into the
cells of a ''measure'' that may give rise to the "briefest intelligible and self-existent musical unit", a ''
motif'' or ''
figure
Figure may refer to:
General
*A shape, drawing, depiction, or geometric configuration
*Figure (wood), wood appearance
*Figure (music), distinguished from musical motif
*Noise figure, in telecommunication
*Dance figure, an elementary dance pattern ...
''. This may be further organized, by repetition and variation, into a definite ''phrase'' that may characterise an entire genre of music, dance or poetry and that may be regarded as the fundamental formal unit of music.
*Long: ≥ many seconds or a minute, corresponding to a durational unit that "consists of musical phrases"—which may make up a melody, a formal section, a poetic
stanza or a characteristic
sequence
In mathematics, a sequence is an enumerated collection of objects in which repetitions are allowed and order matters. Like a set, it contains members (also called ''elements'', or ''terms''). The number of elements (possibly infinite) is calle ...
of
dance moves and steps. Thus the temporal regularity of musical organisation includes the most elementary levels of
musical form.
*Very long: ≥ minutes or many hours, musical compositions or subdivisions of compositions.
Curtis Roads
Curtis Roads (born May 9, 1951) is an American composer, author and computer programmer. He composes electronic and electroacoustic music, specializing in granular and pulsar synthesis.
Career and music
Born in Cleveland, Ohio, Roads studied com ...
takes a wider view by distinguishing nine-time scales, this time in order of decreasing duration. The first two, the
infinite
Infinite may refer to:
Mathematics
* Infinite set, a set that is not a finite set
*Infinity, an abstract concept describing something without any limit
Music
*Infinite (group), a South Korean boy band
*''Infinite'' (EP), debut EP of American m ...
and the supra musical, encompass natural periodicities of months, years, decades, centuries, and greater, while the last three, the
sample and subsample, which take account of digital and electronic rates "too brief to be properly recorded or perceived", measured in millionths of seconds (
microsecond
A microsecond is a unit of time in the International System of Units (SI) equal to one millionth (0.000001 or 10−6 or ) of a second. Its symbol is μs, sometimes simplified to us when Unicode is not available.
A microsecond is equal to 1000 ...
s), and finally the
infinitesimal or infinitely brief, are again in the extra-musical domain. Roads' Macro level, encompassing "overall musical architecture or
form" roughly corresponds to Moravcsik's "very long" division while his Meso level, the level of "divisions of form" including
movements
Movement may refer to:
Common uses
* Movement (clockwork), the internal mechanism of a timepiece
* Motion, commonly referred to as movement
Arts, entertainment, and media
Literature
* "Movement" (short story), a short story by Nancy Fu ...
,
sections,
phrases
In syntax and grammar, a phrase is a group of words or singular word acting as a grammatical unit. For instance, the English expression "the very happy squirrel" is a noun phrase which contains the adjective phrase "very happy". Phrases can consi ...
taking seconds or minutes, is likewise similar to Moravcsik's "long" category. Roads'
Sound object
In musique concrete and electronic music theory the term sound object (originally ''l'objet sonore'') is used to refer to a primary unit of sonic material and often specifically refers to recorded sound rather than written music using manuscript o ...
: "a basic unit of musical structure" and a generalization of
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 ...
(
Xenakis' mini structural time scale); fraction of a second to several seconds, and his
Microsound Granular synthesis is a sound synthesis method that operates on the microsound time scale.
It is based on the same principle as sampling. However, the samples are split into small pieces of around 1 to 100 ms in duration. These small pieces ar ...
(see
granular synthesis Granular synthesis is a sound synthesis method that operates on the microsound time scale.
It is based on the same principle as sampling. However, the samples are split into small pieces of around 1 to 100 ms in duration. These small pieces ar ...
) down to the threshold of audible perception; thousandths to millionths of seconds, are similarly comparable to Moravcsik's "short" and "supershort" levels of duration.
Rhythm–tempo interaction
One difficulty in defining rhythm is the dependence of its perception on tempo, and, conversely, the dependence of tempo perception on rhythm. Furthermore, the rhythm–tempo interaction is context dependent, as explained by Andranik Tangian using an example of the leading rhythm of ″Promenade″ from
Moussorgsky's ''
Pictures at an Exhibition
''Pictures at an Exhibition'', french: Tableaux d'une exposition, link=no is a suite of ten piano pieces, plus a recurring, varied Promenade theme, composed by Russian composer Modest Mussorgsky in 1874. The piece is Mussorgsky's most famous pia ...
'':(
This rhythm is perceived as it is rather than as the first three events repeated at a double tempo (denoted as R012 = repeat from 0, one time, twice faster):
However, the motive with this rhythm in the Moussorgsky's piece
is rather perceived as a repeat
This context-dependent perception of rhythm is explained by the principle of correlative perception, according to which data are perceived in the simplest way. From the viewpoint of
Kolmogorov
Andrey Nikolaevich Kolmogorov ( rus, Андре́й Никола́евич Колмого́ров, p=ɐnˈdrʲej nʲɪkɐˈlajɪvʲɪtɕ kəlmɐˈɡorəf, a=Ru-Andrey Nikolaevich Kolmogorov.ogg, 25 April 1903 – 20 October 1987) was a Sovi ...
's complexity theory, this means such a representation of the data that minimizes the amount of memory.
The example considered suggests two alternative representations of the same rhythm: as it is, and as the rhythm-tempo interaction – a two-level representation in terms of a generative rhythmic pattern and a "tempo curve". Table 1 displays these possibilities both with and without pitch, assuming that one duration requires one byte of information, one byte is needed for the pitch of one tone, and invoking the repeat algorithm with its parameters R012 takes four bytes. As shown in the bottom row of the table, the rhythm without pitch requires fewer bytes if it is "perceived" as it is, without repetitions and tempo leaps. On the contrary, its melodic version requires fewer bytes if the rhythm is "perceived" as being repeated at a double tempo.
Thus, the loop of interdependence of rhythm and tempo is overcome due to the simplicity criterion, which "optimally" distributes the complexity of perception between rhythm and tempo. In the above example, the repetition is recognized because of additional repetition of the melodic contour, which results in a certain redundancy of the musical structure, making the recognition of the rhythmic pattern "robust" under tempo deviations. Generally speaking, the more redundant the "musical support" of a rhythmic pattern, the better its recognizability under augmentations and diminutions, that is, its distortions are perceived as tempo variations rather than rhythmic changes:
Metric structure
![Claves-detail](https://upload.wikimedia.org/wikipedia/commons/c/c3/Claves-detail.gif)
The study of rhythm, stress, and
pitch in
speech is called
prosody (see also:
prosody (music)
In music, prosody is the way the composer sets the text of a vocal composition in the assignment of syllables to notes in the melody to which the text is sung, or to set the music with regard to the ambiance of the lyrics.
However, the relation ...
): it is a topic in
linguistics
Linguistics is the science, scientific study of human language. It is called a scientific study because it entails a comprehensive, systematic, objective, and precise analysis of all aspects of language, particularly its nature and structure ...
and
poetics, where it means the number of lines in a
verse, the number of syllables in each line and the arrangement of those syllables as long or short, accented or unaccented. Music inherited the term "
meter or metre" from the terminology of poetry.)
The metric structure of music includes meter, tempo and all other rhythmic aspects that produce temporal regularity against which the foreground details or
durational patterns of the music are projected. The terminology of western music is notoriously imprecise in this area. MacPherson preferred to speak of "time" and "rhythmic shape",
Imogen Holst
Imogen Clare Holst (; 12 April 1907 – 9 March 1984) was a British composer, arranger, conductor, teacher, musicologist, and festival administrator. The only child of the composer Gustav Holst, she is particularly known for her education ...
of "measured rhythm".
![Phenakistoscope 3g07690d](https://upload.wikimedia.org/wikipedia/commons/d/d3/Phenakistoscope_3g07690d.gif)
Dance music has instantly recognizable patterns of beats built upon a characteristic tempo and measure. The Imperial Society of Teachers of Dancing defines the
tango
Tango is a partner dance and social dance that originated in the 1880s along the Río de la Plata, the natural border between Argentina and Uruguay. The tango was born in the impoverished port areas of these countries as the result of a combina ...
, for example, as to be danced in time at approximately 66 beats per minute. The basic slow step forwards or backwards, lasting for one beat, is called a "slow", so that a full "right–left" step is equal to one measure. (''See
Rhythm and dance''.)
![clavepattern](https://upload.wikimedia.org/wikipedia/commons/4/4b/Clavepattern.svg)
The general classifications of ''metrical rhythm'', ''measured rhythm'', and ''free rhythm'' may be distinguished. Metrical or divisive rhythm, by far the most common in Western music calculates each time value as a multiple or fraction of the beat. Normal accents re-occur regularly providing systematical grouping (measures). Measured rhythm (
additive rhythm
In music, the terms ''additive'' and ''divisive'' are used to distinguish two types of both rhythm and meter:
* A divisive (or, alternately, multiplicative) rhythm is a rhythm in which a larger period of time is divided into smaller rhythmic uni ...
) also calculates each time value as a multiple or fraction of a specified time unit but the accents do not recur regularly within the cycle. Free rhythm is where there is neither, such as in Christian
chant, which has a basic pulse but a freer rhythm, like the rhythm of prose compared to that of verse. ''See
Free time (music)
Free time is a type of musical anti-meter free from musical time and time signature. It is used when a piece of music has no discernible beat. Instead, the rhythm is intuitive and free-flowing. In standard musical notation, there are seven ways i ...
''.
Finally some music, such as some graphically scored works since the 1950s and non-European music such as
Honkyoku
''Honkyoku'' (本曲, "original pieces") are the pieces of shakuhachi music collected in the 18th century by a Komuso of the Japanese Fuke sect Kinko Kurosawa. It was believed that these pieces were played by the members of the Fuke Sect. The Fuk ...
repertoire for
shakuhachi, may be considered ''ametric''. ''Senza misura'' is an Italian musical term for "without meter", meaning to play without a beat, using time to measure how long it will take to play the bar.
Composite rhythm
![Bach, Sinfonia in F minor BWV 795, mm](https://upload.wikimedia.org/wikipedia/commons/d/dd/Bach%2C_Sinfonia_in_F_minor_BWV_795%2C_mm._1-3a_composite_rhythm.png)
A ''composite rhythm'' is the
durations and patterns (rhythm) produced by amalgamating all sounding
parts of a musical
texture
Texture may refer to:
Science and technology
* Surface texture, the texture means smoothness, roughness, or bumpiness of the surface of an object
* Texture (roads), road surface characteristics with waves shorter than road roughness
* Texture ...
. In music of the
common practice period
In European art music, the common-practice period is the era of the tonal system. Most of its features persisted from the mid-Baroque period through the Classical and Romantic periods, roughly from 1650 to 1900. There was much stylistic evoluti ...
, the composite rhythm usually confirms the
meter
The metre (British spelling) or meter (American spelling; see spelling differences) (from the French unit , from the Greek noun , "measure"), symbol m, is the primary unit of length in the International System of Units (SI), though its pref ...
, often in metric or even-note patterns identical to the
pulse
In medicine, a pulse represents the tactile arterial palpation of the cardiac cycle (heartbeat) by trained fingertips. The pulse may be palpated in any place that allows an artery to be compressed near the surface of the body, such as at the n ...
on a specific metric level. White defines ''composite rhythm'' as, "the resultant overall rhythmic
articulation among all the voices of a
contrapuntal
In music, counterpoint is the relationship between two or more musical lines (or voices) which are harmonically interdependent yet independent in rhythm and melodic contour. It has been most commonly identified in the European classical tradi ...
texture". This concept was concurrently defined as "attack point rhythm" by
Maury Yeston
Maury Yeston (born October 23, 1945) is an American composer, lyricist and music theorist.
He is known as the initiator of new Broadway musicals and writing their music and lyrics, as well as a classical orchestral and ballet composer, Yale Uni ...
in 1976 as "the extreme rhythmic foreground of a composition – the absolute surface of articulated movement".
African music
![Diffa Niger Griot DSC 0177](https://upload.wikimedia.org/wikipedia/commons/2/25/Diffa_Niger_Griot_DSC_0177.jpg)
In the
Griot
A griot (; ; Manding: jali or jeli (in N'Ko: , ''djeli'' or ''djéli'' in French spelling); Serer: kevel or kewel / okawul; Wolof: gewel) is a West African historian, storyteller, praise singer, poet, and/or musician.
The griot is a repos ...
tradition of Africa everything related to music has been passed on orally.
Babatunde Olatunji
Michael Babatunde Olatunji (April 7, 1927 – April 6, 2003) was a Nigerian drummer, educator, social activist, and recording artist.
Early life
Olatunji was born in the village of Ajido, near Badagry, Lagos State, in southwestern Nige ...
(1927–2003) developed a simple series of spoken sounds for teaching the rhythms of the hand-drum, using six vocal sounds, "Goon, Doon, Go, Do, Pa, Ta", for three basic sounds on the drum, each played with either the left or the right hand. The debate about the appropriateness of staff notation for African music is a subject of particular interest to outsiders while African scholars from Kyagambiddwa to Kongo have, for the most part, accepted the conventions and limitations of staff notation, and produced transcriptions to inform and enable discussion and debate.
John Miller has argued that West African music is based on the tension between rhythms,
polyrhythm
Polyrhythm is the simultaneous use of two or more rhythms that are not readily perceived as deriving from one another, or as simple manifestations of the same meter. The rhythmic layers may be the basis of an entire piece of music ( cross-rhyt ...
s created by the simultaneous sounding of two or more different rhythms, generally one dominant rhythm interacting with one or more independent competing rhythms. These often oppose or complement each other and the dominant rhythm. Moral values underpin a musical system based on repetition of relatively simple patterns that meet at distant
cross-rhythmic intervals and on
call-and-response form. Collective utterances such as proverbs or lineages appear either in phrases translated into "drum talk" or in the words of songs. People expect musicians to stimulate participation by reacting to people dancing. Appreciation of musicians is related to the effectiveness of their upholding community values.
Indian music
Indian music has also been passed on orally. Tabla players would learn to speak complex rhythm patterns and phrases before attempting to play them.
Sheila Chandra, an English pop singer of Indian descent, made performances based on her singing these patterns. In
Indian classical music, the
Tala of a composition is the rhythmic pattern over which the whole piece is structured.
Western music
In the 20th century, composers like
Igor Stravinsky,
Béla Bartók,
Philip Glass, and
Steve Reich wrote more rhythmically complex music using
odd meters, and techniques such as
phasing
A phaser is an electronic sound processor used to filter a signal, and it has a series of troughs in its frequency-attenutation graph. The position (in Hz) of the peaks and troughs are typically modulated by an internal low-frequency oscil ...
and
additive rhythm
In music, the terms ''additive'' and ''divisive'' are used to distinguish two types of both rhythm and meter:
* A divisive (or, alternately, multiplicative) rhythm is a rhythm in which a larger period of time is divided into smaller rhythmic uni ...
. At the same time, modernists such as
Olivier Messiaen and his pupils used increased complexity to disrupt the sense of a regular beat, leading eventually to the widespread use of
irrational rhythms in
New Complexity. This use may be explained by a comment of
John Cage's where he notes that regular rhythms cause sounds to be heard as a group rather than individually; the irregular rhythms highlight the rapidly changing pitch relationships that would otherwise be subsumed into irrelevant rhythmic groupings.
La Monte Young also wrote music in which the sense of a regular beat is absent because the music consists only of long sustained tones (
drones). In the 1930s,
Henry Cowell wrote music involving multiple simultaneous periodic rhythms and collaborated with
Leon Theremin
Leon Theremin (born Lev Sergeyevich Termen rus, Лев Сергеевич Термéн, p=ˈlʲef sʲɪrˈɡʲejɪvʲɪtɕ tɨrˈmʲen; – 3 November 1993) was a Russian and Soviet inventor, most famous for his invention of the theremin, one o ...
to invent 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 ...
, the first electronic
rhythm machine, in order to perform them. Similarly,
Conlon Nancarrow
Samuel Conlon Nancarrow (; October 27, 1912 – August 10, 1997) was an American- Mexican composer who lived and worked in Mexico for most of his life. Nancarrow is best remembered for his ''Studies for Player Piano'', being one of the firs ...
wrote for the
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 im ...
.
Linguistics
In
linguistics
Linguistics is the science, scientific study of human language. It is called a scientific study because it entails a comprehensive, systematic, objective, and precise analysis of all aspects of language, particularly its nature and structure ...
, rhythm or isochrony is one of the three aspects of
prosody, along with
stress
Stress may refer to:
Science and medicine
* Stress (biology), an organism's response to a stressor such as an environmental condition
* Stress (linguistics), relative emphasis or prominence given to a syllable in a word, or to a word in a phrase ...
and
intonation. Languages can be categorized according to whether they are syllable-timed, mora-timed, or stress-timed. Speakers of syllable-timed languages such as Spanish and
Cantonese
Cantonese ( zh, t=廣東話, s=广东话, first=t, cy=Gwóngdūng wá) is a language within the Chinese (Sinitic) branch of the Sino-Tibetan languages originating from the city of Guangzhou (historically known as Canton) and its surrounding ar ...
put roughly equal time on each syllable; in contrast, speakers of stressed-timed languages such as English and
Mandarin Chinese
Mandarin (; ) is a group of Chinese (Sinitic) dialects that are natively spoken across most of northern and southwestern China. The group includes the Beijing dialect, the basis of the phonology of Standard Chinese, the official language ...
put roughly equal time lags between stressed syllables, with the timing of the unstressed syllables in between them being adjusted to accommodate the stress timing.
Narmour
[, cited in ] describes three categories of prosodic rules that create rhythmic successions that are additive (same duration repeated), cumulative (short-long), or countercumulative (long-short). Cumulation is associated with closure or relaxation, countercumulation with openness or tension, while additive rhythms are open-ended and repetitive. Richard Middleton points out this method cannot account for
syncopation and suggests the concept of
transformation
Transformation may refer to:
Science and mathematics
In biology and medicine
* Metamorphosis, the biological process of changing physical form after birth or hatching
* Malignant transformation, the process of cells becoming cancerous
* Tran ...
.
References
Sources
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Further reading
* Giger, Peter (1993). ''Die Kunst des Rhythmus'',
Schott Music. A theoretical approach to western and non-western rhythms.
*
*
* Humble, M. (2002)
The Development of Rhythmic Organization in Indian Classical Music MA dissertation, School of Oriental and African Studies, University of London.
* Lewis, Andrew (2005). ''Rhythm—What it is and How to Improve Your Sense of It''. San Francisco
RhythmSourcePress. .
* Mazzola, Guerino (2017). ''The Topos of Music, Vol. I''. Heidelberg: Springer. .
*
*
Palmer, John (2013). ''Rhythm to Go'', Vision Edition and CE Books. A fast-track collection of graded exercises from elementary to advanced level divided in four sections and including an additional chapter with rhythmic structures used in contemporary music.
* Petersen, Peter (2013). ''Music and Rhythm: Fundamentals, History, Analysis.'' New York: Peter Lang.
*
Scholes, Percy (1977a). "Form", in ''The Oxford Companion to Music'', 6th corrected reprint of the 10th ed. (1970), revised and reset, edited by John Owen Ward. London and New York: Oxford University Press. .
* Williams, C. F. A., ''The Aristoxenian Theory of Musical Rhythm'', (Cambridge Library Collection—Music), Cambridge University Press; first edition, 2009.
* Van Der, Horst F. (1963). ''Maat en Ritme'',
Broekmans & Van Poppel
Broekmans & van Poppel is a private company founded in 1914 by Mr. Broekmans and Van Poppel. The company focuses on music publishing and trade in sheet music.
Broekmans & Van Poppel is mainly known for its shops in Badhoevedorp (formerly in Amste ...
, . A collection of graded exercises in two volumes, from elementary to advanced level.
*
External links
'Rhythm of Prose', William Morrison Patterson ,Columbia University Press 1917*
ttp://www.signosemio.com/semiotics-of-rhythm.asp Louis Hébert, "A Little Semiotics of Rhythm. Elements of Rhythmology", in ''Signo''
{{Authority control
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Cognitive musicology
Musical terminology
Patterns