Rhythm section
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A rhythm section is a group of
musician A musician is someone who Composer, composes, Conducting, conducts, or Performing arts#Performers, performs music. According to the United States Employment Service, "musician" is a general Terminology, term used to designate a person who fol ...
s within a music ensemble or band that provides the underlying
rhythm 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 r ...
,
harmony In music, harmony is the concept of combining different sounds in order to create new, distinct musical ideas. Theories of harmony seek to describe or explain the effects created by distinct pitches or tones coinciding with one another; harm ...
and pulse of the accompaniment, providing a rhythmic and harmonic reference and "beat" for the rest of the band. The rhythm section is often contrasted with the roles of other musicians in the band, such as the lead guitarist or
lead vocals The lead vocalist in popular music is typically the member of a group or band whose voice is the most prominent melody in a performance where multiple voices may be heard. The lead singer sets their voice against the accompaniment parts of the ...
whose primary job is to carry the
melody A melody (), also tune, voice, or line, is a linear succession of musical tones that the listener perceives as a single entity. In its most literal sense, a melody is a combination of Pitch (music), pitch and rhythm, while more figurativel ...
. The core elements of the rhythm section are usually the
drum kit A drum kit or drum set (also known as a trap set, or simply drums in popular music and jazz contexts) is a collection of drums, cymbals, and sometimes other Percussion instrument, auxiliary percussion instruments set up to be played by one p ...
and
bass Bass or Basses may refer to: Fish * Bass (fish), various saltwater and freshwater species Wood * Bass or basswood, the wood of the tilia americana tree Music * Bass (sound), describing low-frequency sound or one of several instruments in th ...
. The drums and bass provide the basic pulse and
groove Groove or Grooves may refer to: Music * Groove (music) * Groove (drumming) * The Groove (band), an Australian rock/pop band of the 1960s * The Groove (Sirius XM), a US radio station * Groove 101.7FM, a former Perth, Australia, radio station ...
of a song. The section is augmented by other instruments such as
keyboard instrument A keyboard instrument is a musical instrument played using a keyboard, a row of levers that are pressed by the fingers. The most common of these are the piano, organ, and various electronic keyboards, including synthesizers and digital piano ...
s and
guitar The guitar is a stringed musical instrument that is usually fretted (with Fretless guitar, some exceptions) and typically has six or Twelve-string guitar, twelve strings. It is usually held flat against the player's body and played by strumming ...
s that are used to play the
chord progression In a musical composition, a chord progression or harmonic progression (informally chord changes, used as a plural, or simply changes) is a succession of chords. Chord progressions are the foundation of harmony in Western musical tradition from ...
upon which the
song A song is a musical composition performed by the human voice. The voice often carries the melody (a series of distinct and fixed pitches) using patterns of sound and silence. Songs have a structure, such as the common ABA form, and are usu ...
is based. The bass instrument (either
double bass The double bass (), also known as the upright bass, the acoustic bass, the bull fiddle, or simply the bass, is the largest and lowest-pitched string instrument, chordophone in the modern orchestra, symphony orchestra (excluding rare additions ...
, or
electric bass guitar The bass guitar (), also known as the electric bass guitar, electric bass, or simply the bass, is the lowest-pitched member of the guitar family. It is similar in appearance and construction to an Electric guitar, electric but with a longer nec ...
, or another low-register instrument such as the synth bass, depending on the group and its style of music) plays the low-pitched
bassline Bassline (also known as a bass line or bass part) is the term used in many styles of music, such as blues, jazz, funk, Dub music, dub and electronic music, electronic, traditional music, traditional, and classical music, for the low-pitched P ...
. The bassline is a musical part that supports the
chord progression In a musical composition, a chord progression or harmonic progression (informally chord changes, used as a plural, or simply changes) is a succession of chords. Chord progressions are the foundation of harmony in Western musical tradition from ...
, typically by playing a musically interesting bassline that outlines the important notes of the harmony, often by emphasizing the root, fifth, and third of each chord. The term is common in modern small musical ensembles, such as bands that play
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. Its roots are in blues, ragtime, European harmony, African rhythmic rituals, spirituals, h ...
,Randel, Don Michael (1999). "Rhythm section" in ''The Harvard Concise Dictionary of Music and Musicians''; p. 560.
country A country is a distinct part of the world, such as a state, nation, or other political entity. When referring to a specific polity, the term "country" may refer to a sovereign state, state with limited recognition, constituent country, ...
,
blues Blues is a music genre and musical form that originated among African Americans in the Deep South of the United States around the 1860s. Blues has incorporated spiritual (music), spirituals, work songs, field hollers, Ring shout, shouts, cha ...
, and rock.
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: * String instruments, such as the violin, viola, cello, ...
s that play
popular music Popular music is music with wide appeal that is typically distributed to large audiences through the music industry. These forms and styles can be enjoyed and performed by people with little or no musical training.Popular Music. (2015). ''Fun ...
, film soundtracks (often called a "pops orchestra"), or
musical theatre Musical theatre is a form of theatre, theatrical performance that combines songs, spoken dialogue, acting and dance. The story and emotional content of a musical – humor, pathos, love, anger – are communicated through words, music, ...
orchestras may also feature a rhythm section (at a minimum drum kit and electric bass/amplified double bass, but possibly including keyboards and guitar) that performs with the larger ensemble. The rhythm section provides a rock or pop feel and sounds that would be difficult to recreate with orchestral instruments.


Instruments

A typical rhythm section comprises one or more
guitar The guitar is a stringed musical instrument that is usually fretted (with Fretless guitar, some exceptions) and typically has six or Twelve-string guitar, twelve strings. It is usually held flat against the player's body and played by strumming ...
s (either
electric guitar An electric guitar is a guitar that requires external electric Guitar amplifier, sound amplification in order to be heard at typical performance volumes, unlike a standard acoustic guitar. It uses one or more pickup (music technology), pickups ...
s, in
rock music Rock is a Music genre, genre of popular music that originated in the United States as "rock and roll" in the late 1940s and early 1950s, developing into a range of styles from the mid-1960s, primarily in the United States and the United Kingdo ...
bands;
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, ...
s, in
country music Country (also called country and western) is a popular music, music genre originating in the southern regions of the United States, both the American South and American southwest, the Southwest. First produced in the 1920s, country music is p ...
,
folk music Folk music is a music genre that includes #Traditional folk music, traditional folk music and the Contemporary folk music, contemporary genre that evolved from the former during the 20th-century folk revival. Some types of folk music may be ca ...
and
blues Blues is a music genre and musical form that originated among African Americans in the Deep South of the United States around the 1860s. Blues has incorporated spiritual (music), spirituals, work songs, field hollers, Ring shout, shouts, cha ...
or both electric and acoustic in some bands); and/or a
keyboard instrument A keyboard instrument is a musical instrument played using a keyboard, a row of levers that are pressed by the fingers. The most common of these are the piano, organ, and various electronic keyboards, including synthesizers and digital piano ...
(
piano A piano is a keyboard instrument that produces sound when its keys are depressed, activating an Action (music), action mechanism where hammers strike String (music), strings. Modern pianos have a row of 88 black and white keys, tuned to a c ...
, electric piano,
Hammond organ The Hammond organ is an electric organ invented by Laurens Hammond and John M. Hanert, first manufactured in 1935. Multiple models have been produced, most of which use sliding #Drawbars, drawbars to vary sounds. Until 1975, sound was created ...
,
synthesizer A synthesizer (also synthesiser or synth) is an electronic musical instrument that generates audio signals. Synthesizers typically create sounds by generating waveforms through methods including subtractive synthesis, additive synthesis a ...
, etc.) a
double bass The double bass (), also known as the upright bass, the acoustic bass, the bull fiddle, or simply the bass, is the largest and lowest-pitched string instrument, chordophone in the modern orchestra, symphony orchestra (excluding rare additions ...
, an
acoustic bass guitar The acoustic bass guitar (sometimes shortened to acoustic bass or initialized ABG) is a bass instrument with a hollow wooden body similar to, though usually larger than, a steel-string acoustic guitar. Like the traditional electric bass guitar ...
, or an
electric bass guitar The bass guitar (), also known as the electric bass guitar, electric bass, or simply the bass, is the lowest-pitched member of the guitar family. It is similar in appearance and construction to an Electric guitar, electric but with a longer nec ...
(depending on the style of music), and
drums The drum is a member of the percussion instrument, percussion group of musical instruments. In the Hornbostel–Sachs classification system, it is a membranophones, membranophone. Drums consist of at least one Acoustic membrane, membrane, c ...
(usually acoustic, but in some post-1980s styles, the drums may be
electronic drum Electronic drums are a modern electronic musical instrument, primarily designed to serve as an alternative to an acoustic drum kit. Electronic drums consist of an electronic sound module which produces the Drum synthesiser, synthesized or Sampler ...
s). In some styles of music, there may be additional
percussion A percussion instrument is a musical instrument that is sounded by being struck or scraped by a percussion mallet, beater including attached or enclosed beaters or Rattle (percussion beater), rattles struck, scraped or rubbed by hand or ...
ists playing instruments such as the
djembe A djembe or jembe ( ; from Maninka language, Malinke ''jembe'' , N'Ko script, N'Ko: ) is a rope-tuned skin-covered goblet drum played with bare hands, originally from West Africa. According to the Bambara people in Mali, the name of the djembe ...
or
shakers The United Society of Believers in Christ's Second Appearing, more commonly known as the Shakers, are a Millenarianism, millenarian Restorationism, restorationist Christianity, Christian sect founded in England and then organized in the Unit ...
. Some styles of music often have two electric guitarists, such as rock genres like
heavy metal music Heavy metal (or simply metal) is a Music genre, 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 band ...
and
punk rock Punk rock (also known as simply punk) is a rock music genre that emerged in the mid-1970s. Rooted in 1950s rock and roll and 1960s garage rock, punk bands rejected the corporate nature of mainstream 1970s rock music. They typically produced sh ...
. Some styles of music use multiple keyboard instrument performers simultaneously (e.g.,
piano A piano is a keyboard instrument that produces sound when its keys are depressed, activating an Action (music), action mechanism where hammers strike String (music), strings. Modern pianos have a row of 88 black and white keys, tuned to a c ...
and
Hammond organ The Hammond organ is an electric organ invented by Laurens Hammond and John M. Hanert, first manufactured in 1935. Multiple models have been produced, most of which use sliding #Drawbars, drawbars to vary sounds. Until 1975, sound was created ...
or electric piano and
synthesizer A synthesizer (also synthesiser or synth) is an electronic musical instrument that generates audio signals. Synthesizers typically create sounds by generating waveforms through methods including subtractive synthesis, additive synthesis a ...
) for a fuller sound. A rhythm section could be as small as two or three instruments (e.g., a guitarist and a bassist or a
power trio A power trio is a rock band format having a lineup of electric guitar, bass guitar and drum kit, leaving out a dedicated vocalist or an additional rhythm guitar or keyboard instrument that are often used in other rock music bands that are quart ...
of bass, drums and guitar) or it may be a fairly large ensemble with several keyboardists, several guitarists, auxiliary string players (
mandolin A mandolin (, ; literally "small mandola") is a Chordophone, stringed musical instrument in the lute family and is generally Plucked string instrument, plucked with a plectrum, pick. It most commonly has four Course (music), courses of doubled St ...
,
ukulele The ukulele ( ; ); also called a uke (informally), is a member of the lute (ancient guitar) family of instruments. The ukulele is of Portuguese origin and was popularized in Hawaii. The tone and volume of the instrument vary with size and con ...
, etc.), a drummer and percussionists. The largest rhythm sections may be led by a
bandleader A bandleader is the leader of a music group such as a dance band, rock or pop band or jazz quartet. The term is most commonly used with a group that plays popular music as a small combo or a big band, such as one which plays jazz, blues, rhyth ...
or a conductor who indicates the
tempo In musical terminology, tempo (Italian for 'time'; plural 'tempos', or from the Italian plural), measured in beats per minute, is the speed or pace of a given musical composition, composition, and is often also an indication of the composition ...
of each song, starts each song, leads slow-downs of the music at cadences (sections of songs where the music comes to rest on a chord), and indicates when to change soloists and how and when the song will end. The instrumentalists used in a rhythm section vary according to the style of music and era. Modern pop, rock and jazz band rhythm sections typically consist of a drummer, a bass player, and one or more players of chordal instruments (e.g., a pianist, guitarist, etc.).Jazz Drum Lessons
- Drumbook.org
The term ''rhythm section'' may also refer to the instruments in this group (named collectively the "rhythm section instruments").
Klezmer Klezmer ( or ) is an instrumental musical tradition of the Ashkenazi Jews of Central and Eastern Europe. The essential elements of the tradition include dance tunes, ritual melodies, and virtuosic improvisations played for listening; these wou ...
bands rarely have percussion, but rely heavily on a bass instrument, often brass, and a piano or accordion. Traditional dance music bands from Central and Eastern Europe often build their rhythm section around a
double bass The double bass (), also known as the upright bass, the acoustic bass, the bull fiddle, or simply the bass, is the largest and lowest-pitched string instrument, chordophone in the modern orchestra, symphony orchestra (excluding rare additions ...
and
viola The viola ( , () ) is a string instrument of the violin family, and is usually bowed when played. Violas are slightly larger than violins, and have a lower and deeper sound. Since the 18th century, it has been the middle or alto voice of the ...
- the musician designated with the German term "Bratscher". In
music industry The music industry are individuals and organizations that earn money by Songwriter, writing songs and musical compositions, creating and selling Sound recording and reproduction, recorded music and sheet music, presenting live music, concerts, ...
parlance, the amplifiers and some of the instruments are nicknamed the " backline." Backline instruments are commonly provided for bands at
music festival A music festival is a festival, community event with music, performances of singing and instrument playing that is often presented with a theme such as musical genre (e.g., rock music, rock, blues, folk music, folk, jazz, classical music), nation ...
s and other concerts where several bands will play during an event. By providing these backline instruments, the changeover process is quickened when new bands take the stage. The backline typically includes large and heavy items that are hard to transport, including large bass amplifiers and
guitar amplifier A guitar amplifier (or amp) is an electronic amplifier, electronic device or system that strengthens the electrical signal from a Pickup (music technology), pickup on an electric guitar, bass guitar, or acoustic guitar so that it can produce so ...
s and their speaker cabinets, the
drum kit A drum kit or drum set (also known as a trap set, or simply drums in popular music and jazz contexts) is a collection of drums, cymbals, and sometimes other Percussion instrument, auxiliary percussion instruments set up to be played by one p ...
(usually minus the
cymbal A cymbal is a common percussion instrument. Often used in pairs, cymbals consist of thin, normally round plates of various alloys. The majority of cymbals are of indefinite pitch, although small disc-shaped cymbals based on ancient designs sou ...
s and the
snare drum The snare drum (or side drum) is a percussion instrument that produces a sharp staccato sound when the head is struck with a drum stick, due to the use of a series of stiff wires held under tension against the lower skin. Snare drums are often u ...
, which each drummer brings from home), a
Hammond organ The Hammond organ is an electric organ invented by Laurens Hammond and John M. Hanert, first manufactured in 1935. Multiple models have been produced, most of which use sliding #Drawbars, drawbars to vary sounds. Until 1975, sound was created ...
,
stage piano A stage piano is an electronic musical instrument designed for use in live performances on stage (theatre), stage or in a studio, as well as for music recording in Jazz and popular music. While stage pianos share some of the same features as d ...
, and a
keyboard amplifier A keyboard amplifier is a powered instrument amplifier, electronic amplifier and loudspeaker in a speaker enclosure, speaker cabinet used for the amplification of electronic keyboard instruments. Keyboard amplifiers are distinct from other type ...
. Even when a venue or festival provides a backline amplification, musicians must still supply some instruments themselves, such as guitars, an electric bass, and in some cases the cymbals and/or the snare drum. The venue informs musicians about which instruments are supplied as the backline for a specific concert or stage and in many cases, the
contract A contract is an agreement that specifies certain legally enforceable rights and obligations pertaining to two or more parties. A contract typically involves consent to transfer of goods, services, money, or promise to transfer any of thos ...
signed by the band and the venue/promoter contains an explicit list of the backline gear that will be on stage, even specifying brand names and model numbers.


Roles

In modern rock music, a
rhythm guitar In music performances, rhythm guitar is a guitar technique and role that performs a combination of two functions: to provide all or part of the rhythmic pulse (music), pulse in conjunction with other instruments from the rhythm section (e.g., d ...
ist specializes in rhythmic and chordal playing (as opposed to the melodic
guitar solo A guitar solo is a melody, melodic passage, instrumental section (music), section, or entire piece of music, pre-written (or improvised) to be played on a classical guitar, classical, electric guitar, electric, or acoustic guitar. In 20th and ...
s and lead melody lines played by the
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 ...
), often repeating quaver (eighth-note), half note or whole note chords. In the louder genres, such as
hard rock Hard rock or heavy rock is a heavier subgenre of rock music typified by aggressive vocals and Distortion (music), distorted electric guitars. Hard rock began in the mid-1960s with the Garage rock, garage, Psychedelic rock, psychedelic and blues ...
, heavy metal, and
punk rock Punk rock (also known as simply punk) is a rock music genre that emerged in the mid-1970s. Rooted in 1950s rock and roll and 1960s garage rock, punk bands rejected the corporate nature of mainstream 1970s rock music. They typically produced sh ...
, rhythm guitarists often play
power chord A power chord , also called a fifth chord, is a colloquial name for a chord on guitar, especially on electric guitar, that consists of the root note and the fifth, as well as possibly octaves of those notes. Power chords are commonly pla ...
s with
distortion In signal processing, distortion is the alteration of the original shape (or other characteristic) of a signal. In communications and electronics it means the alteration of the waveform of an information-bearing signal, such as an audio signal ...
. Rhythm guitarists often strum open chords in pop, rock, country, and folk music and play barre chords in many pop and rock styles. Although rhythm sections spend much of the time providing
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 of m ...
(backing parts) for
song A song is a musical composition performed by the human voice. The voice often carries the melody (a series of distinct and fixed pitches) using patterns of sound and silence. Songs have a structure, such as the common ABA form, and are usu ...
s, in some cases they provide other musical roles. In some songs or styles of music, instruments from the rhythm section may play soloistic roles on occasion (e.g., improvised guitar solos or solo breaks) or play a melodic role (e.g., a rhythm guitarist may play a lyrical
countermelody In music, a counter-melody (often countermelody) is a sequence of notes, perceived as a melody, written to be played simultaneously with a more prominent lead melody. In other words, it is a secondary melody played in counterpoint with the pri ...
behind a singer or a melodic intro line before the lead vocalist starts to sing). Since rhythm sections generally provide the background music for lead instruments and solo singers, rhythm sections are typically not as prominent as a singer or soloist. However, since rhythm sections provide the underpinning for a good performance by the lead instruments and vocalists, good rhythm sections are valued in the
music industry The music industry are individuals and organizations that earn money by Songwriter, writing songs and musical compositions, creating and selling Sound recording and reproduction, recorded music and sheet music, presenting live music, concerts, ...
. Some of the most accomplished rhythm sections have become famous, such as
The Band The Band was a Canadian-American rock music, rock band formed in Toronto, Ontario, in 1957. It consisted of the Canadians Rick Danko (bass, guitar, vocals, fiddle), Garth Hudson (organ, keyboards, accordion, saxophone), Richard Manuel (piano, d ...
, the
E Street Band The E Street Band is an American rock band that has been the primary backing band for rock musician Bruce Springsteen since 1972. In 2014, the E Street Band was inducted into the Rock and Roll Hall of Fame. For the bulk of Springsteen's recordin ...
and
Sly Dunbar Lowell Fillmore "Sly" Dunbar (born 10 May 1952, Kingston, Jamaica) is a Jamaican drummer, best known as one half of the prolific Jamaican rhythm section and reggae production duo Sly and Robbie. Biography Dunbar began playing at 15 in a ba ...
and Robbie Shakespeare (the latter in
reggae Reggae () is a music genre that originated in Jamaica during the late 1960s. The term also denotes the modern popular music of Jamaica and its Jamaican diaspora, diaspora. A 1968 single by Toots and the Maytals, "Do the Reggay", was the first ...
). In some popular bands, all of the band members, including rhythm section members, have become famous as individuals (e.g., the rhythm section members of
The Beatles The Beatles were an English Rock music, rock band formed in Liverpool in 1960. The core lineup of the band comprised John Lennon, Paul McCartney, George Harrison and Ringo Starr. They are widely regarded as the Cultural impact of the Beatle ...
,
The Rolling Stones The Rolling Stones are an English Rock music, rock band formed in London in 1962. Active for over six decades, they are one of the most popular, influential, and enduring bands of the Album era, rock era. In the early 1960s, the band pione ...
,
The Who The Who are an English Rock music, rock band formed in London in 1964. Their classic lineup (1964–1978) consisted of lead vocalist Roger Daltrey, guitarist Pete Townshend, bassist John Entwistle and drummer Keith Moon. Considered one of th ...
, etc.). In almost all genres of
popular music Popular music is music with wide appeal that is typically distributed to large audiences through the music industry. These forms and styles can be enjoyed and performed by people with little or no musical training.Popular Music. (2015). ''Fun ...
and
traditional 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 ...
that use rhythm sections, ranging from rock to country to jazz, the rhythm section members are expected to be able to
improvise Improvisation, often shortened to improv, is the activity of making or doing something not planned beforehand, using whatever can be found. The origin of the word itself is in the Latin "improvisus", which literally means un-foreseen. Improvis ...
(make up) their parts or prepare their own parts for a given song by listening to the CD at home. Once the bassist and chord-playing instruments are provided with the
chord progression In a musical composition, a chord progression or harmonic progression (informally chord changes, used as a plural, or simply changes) is a succession of chords. Chord progressions are the foundation of harmony in Western musical tradition from ...
on a lead sheet (in which chords are typically named using the root note of the chord and its quality; e.g., C Major, d minor, G7, etc.), they are expected to be able to improvise or prepare a bass line and chord voicings, respectively, that suit the style of the song. In each style of music, there are different musical approaches and styles that rhythm section members are expected to use. For example, in a country music song the guitarist will be expected to be able to perform a chord progression using an intricate fingerpicking style; in a heavy metal song, the guitarist will be expected to play
power chord A power chord , also called a fifth chord, is a colloquial name for a chord on guitar, especially on electric guitar, that consists of the root note and the fifth, as well as possibly octaves of those notes. Power chords are commonly pla ...
s and complex, precise rhythmic patterns; in a
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. Its roots are in blues, ragtime, European harmony, African rhythmic rituals, spirituals, h ...
song, a guitarist will be expected to be able to play "jazz voicings" of the chords, which emphasize the third, seventh and often the sixth or ninth chord tones (this contrasts with the barre chord voicings used in pop and rock, which emphasize the root, fifth, and to a lesser degree, the third of the chord). Drummers and percussionists are expected to be able to improvise or prepare rhythm parts that suit the style of a given song. In some cases, an
arranger In music, an arrangement is a musical adaptation of an existing composition. Differences from the original composition may include reharmonization, melodic paraphrasing, orchestration, or formal development. Arranging differs from orchestrat ...
,
orchestrator Orchestration is the study or practice of writing music for an orchestra (or, more loosely, for any musical ensemble, such as a concert band) or of adapting music composed for another medium for an orchestra. Also called "instrumentation", orch ...
or
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 def ...
will provide a written-out bass part or drum part written in
music notation Musical notation is any system used to visually represent music. Systems of notation generally represent the elements of a piece of music that are considered important for its performance in the context of a given musical tradition. The proces ...
(the five-line staff in which the notes are round symbols with or without stems). It is rare in jazz or rock for chords to be written out in music notation; the arranger or songwriter typically writes the chord symbol and expects the guitarist to improvise the appropriate chord voicing.


Other roles

Rhythm section members may be expected to sing backup vocals or
harmony In music, harmony is the concept of combining different sounds in order to create new, distinct musical ideas. Theories of harmony seek to describe or explain the effects created by distinct pitches or tones coinciding with one another; harm ...
parts in some styles of music. In some styles of music, notably 2010s-era pop,
hip hop music Hip-hop or hip hop (originally disco rap) is a popular music Music genre, genre that emerged in the early 1970s from the African Americans, African-American community of New York City. The style is characterized by its synthesis of a wide r ...
and funk, rhythm section members may be required to perform a rhythmic dance routine, which may range from a simple body movement to a complex dance choreography that requires significant dance skills. In some types of
heavy metal music Heavy metal (or simply metal) is a Music genre, 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 band ...
, rhythm section members (guitar, bass, drums) may be expected to be able to "headbang" (move their head in an up and down fashion in time with the beat) while performing. Less commonly, some rhythm section members may sing
lead vocals The lead vocalist in popular music is typically the member of a group or band whose voice is the most prominent melody in a performance where multiple voices may be heard. The lead singer sets their voice against the accompaniment parts of the ...
(e.g.,
Phil Collins Philip David Charles Collins (born 30 January 1951) is an English musician, songwriter, record producer and actor. He was the drummer and later became the lead singer of the rock band Genesis (band), Genesis and had a successful solo career, ac ...
or Sting). In some groups, one rhythm section member may have other roles, such as
bandleader A bandleader is the leader of a music group such as a dance band, rock or pop band or jazz quartet. The term is most commonly used with a group that plays popular music as a small combo or a big band, such as one which plays jazz, blues, rhyth ...
(e.g., jazz bassist
Charles Mingus Charles Mingus Jr. (April 22, 1922 – January 5, 1979) was an American jazz Double bass, upright bassist, composer, bandleader, pianist, and author. A major proponent of collective Musical improvisation, improvisation, he is considered one of ...
), conductor (often the case in 2010s-era musical theatre shows),
songwriter A songwriter is a person who creates musical compositions or writes lyrics for songs, or both. The writer of the music for a song can be called a composer, although this term tends to be used mainly in the classical music genre and film scoring. ...
,
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 def ...
or
arranger In music, an arrangement is a musical adaptation of an existing composition. Differences from the original composition may include reharmonization, melodic paraphrasing, orchestration, or formal development. Arranging differs from orchestrat ...
.


Components


Jazz

In the case of swing bands, the classic rhythm section comprises a quartet of
electric guitar An electric guitar is a guitar that requires external electric Guitar amplifier, sound amplification in order to be heard at typical performance volumes, unlike a standard acoustic guitar. It uses one or more pickup (music technology), pickups ...
,
piano A piano is a keyboard instrument that produces sound when its keys are depressed, activating an Action (music), action mechanism where hammers strike String (music), strings. Modern pianos have a row of 88 black and white keys, tuned to a c ...
,
double bass The double bass (), also known as the upright bass, the acoustic bass, the bull fiddle, or simply the bass, is the largest and lowest-pitched string instrument, chordophone in the modern orchestra, symphony orchestra (excluding rare additions ...
, and
drums The drum is a member of the percussion instrument, percussion group of musical instruments. In the Hornbostel–Sachs classification system, it is a membranophones, membranophone. Drums consist of at least one Acoustic membrane, membrane, c ...
; a noted example is that of the
Count Basie Orchestra The Count Basie Orchestra is a 16- to 18-piece big band, one of the most prominent jazz performing groups of the swing era, founded by Count Basie in 1935 and recording regularly from 1936. Despite a brief disbandment at the beginning of the 19 ...
with Freddie Green, the Count, Walter Page, and
Jo Jones Jonathan David Samuel Jones (October 7, 1911 – September 3, 1985) was an American jazz drummer. A band leader and pioneer in jazz percussion, Jones anchored the Count Basie Orchestra rhythm section from 1934 to 1948. He was sometimes k ...
. Earlier jazz bands had used
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 in modern forms is usually made of plastic, where early membranes were made of animal skin. ...
in place of guitar, and other bass instruments such as the
tuba The tuba (; ) is the largest and lowest-pitched musical instrument in the brass instrument, brass family. As with all brass instruments, the sound is produced by lip vibrationa buzzinto a mouthpiece (brass), mouthpiece. It first appeared in th ...
for recording purposes prior to the advent of
microphone A microphone, colloquially called a mic (), or mike, is a transducer that converts sound into an electrical signal. Microphones are used in many applications such as telephones, hearing aids, public address systems for concert halls and publi ...
technology in studios. As
bebop Bebop or bop is a style of jazz developed in the early to mid-1940s in the United States. The style features compositions characterized by a fast tempo (usually exceeding 200 bpm), complex chord progressions with rapid chord changes and numerou ...
evolved, smaller jazz groups dropped the guitar, and many
free jazz Free jazz, or free form in the early to mid-1970s, is a style of avant-garde jazz or an experimental approach to jazz improvisation that developed in the late 1950s and early 1960s, when musicians attempted to change or break down jazz conventi ...
ensembles dropped the piano as well. Auxiliary
percussion A percussion instrument is a musical instrument that is sounded by being struck or scraped by a percussion mallet, beater including attached or enclosed beaters or Rattle (percussion beater), rattles struck, scraped or rubbed by hand or ...
such as
claves Claves (; ) are a percussion instrument consisting of a pair of short, wooden sticks about 20–25 centimeters (8–10 inches) long and about 2.5 centimeters (1 inch) in diameter. Although traditionally made of wood (typically rosewood, ebony ...
,
bongos Bongos (Spanish language, Spanish: ''bongó'') are an Afro-Cubans, Afro-Cuban percussion instrument consisting of a pair of small open bottomed hand drums of different sizes. The pair consists of the larger ''hembra'' () and the smaller ''macho'' ...
or
maracas A maraca ( , , ), sometimes called shaker or chac-chac, is a rattle which appears in many genres of Caribbean and Latin music. It is shaken by a handle and usually played as part of a pair. Maracas, also known as tamaracas, were rattles of d ...
can also be used, especially in music influenced by strains from
Latin America Latin America is the cultural region of the Americas where Romance languages are predominantly spoken, primarily Spanish language, Spanish and Portuguese language, Portuguese. Latin America is defined according to cultural identity, not geogr ...
such as salsa and
samba Samba () is a broad term for many of the rhythms that compose the better known Brazilian music genres that originated in the Afro-Brazilians, Afro Brazilian communities of Bahia in the late 19th century and early 20th century, It is a name or ...
. In theory any instrument or instruments can provide a steady rhythm: for example, in the trio led by
Jimmy Giuffre James Peter Giuffre (, ; April 26, 1921 – April 24, 2008) was an American jazz clarinetist, saxophonist, composer, and arranger. He is known for developing forms of jazz which allowed for free interplay between the musicians, anticipating f ...
the late 1950s, the
clarinet The clarinet is a Single-reed instrument, single-reed musical instrument in the woodwind family, with a nearly cylindrical bore (wind instruments), bore and a flared bell. Clarinets comprise a Family (musical instruments), family of instrume ...
,
valve trombone The valve trombone is a brass instrument in the trombone family that has a set of valves to vary the pitch instead of (or in addition to) a slide. Although it has been built in sizes from alto to contrabass, it is the tenor valve trombone pitched ...
and
guitar The guitar is a stringed musical instrument that is usually fretted (with Fretless guitar, some exceptions) and typically has six or Twelve-string guitar, twelve strings. It is usually held flat against the player's body and played by strumming ...
all switched between lead and supporting roles. In the 1950s, some jazz bandleaders began to replace the double bass with the then-newly invented electric bass. However, the electric bass made a big impact on jazz in the 1970s, with the advent of jazz rock and
jazz fusion Jazz fusion (also known as jazz rock, jazz-rock fusion, or simply fusion) is a popular music genre that developed in the late 1960s when musicians combined jazz harmony and improvisation with rock music, funk, and rhythm and blues. Electric gui ...
. The
electric bass The bass guitar (), also known as the electric bass guitar, electric bass, or simply the bass, is the lowest-pitched member of the guitar family. It is similar in appearance and construction to an electric but with a longer neck and scale leng ...
was much easier to amplify to stadium-filling volumes using large bass speaker cabinets and amplifiers than an upright bass. The electric bass also began to be used as an expressive solo instrument, as exemplified by the performances of
Jaco Pastorius John Francis Anthony Pastorius III, also known as Jaco Pastorius (; December 1, 1951 – September 21, 1987), was an American jazz bassist, composer, and producer. Widely regarded as one of the greatest and most influential bassists of all time, ...
and
Stanley Clarke Stanley Clarke (born June 30, 1951) is an American bassist, composer and founding member of Return to Forever, one of the first jazz fusion bands. Clarke gave the bass guitar a prominence it lacked in jazz-related music. He is the first jazz-fus ...
. In the 1970s, the main chordal rhythm instruments were often electric instruments such as the Rhodes electric piano or electric clavinet, often run through
effects unit An effects unit, effects processor, 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 (music), distortion/overdrive, ...
s such as fuzz, phasers, or wah-wah pedals and amplified through loud
keyboard amplifier A keyboard amplifier is a powered instrument amplifier, electronic amplifier and loudspeaker in a speaker enclosure, speaker cabinet used for the amplification of electronic keyboard instruments. Keyboard amplifiers are distinct from other type ...
s. The jazz fusion rhythm section followed the lead of the rock rhythm sections of the era, and used banks of speakers and powerful
amplifiers An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the magnitude of a signal (a time-varying voltage or current). It is a two-port electronic circuit that uses electric power from a power suppl ...
to create a massive sound large enough for stadium concerts. In the later 1980s and subsequent decades, jazz fusion bands such as the Chick Corea Elektric Band used
synthesizer A synthesizer (also synthesiser or synth) is an electronic musical instrument that generates audio signals. Synthesizers typically create sounds by generating waveforms through methods including subtractive synthesis, additive synthesis a ...
s in the rhythm section, both for chordal
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 of m ...
and for synth bass parts.


R&B, rock and pop

R&B and
rock and roll Rock and roll (often written as rock & roll, rock-n-roll, and rock 'n' roll) is a Genre (music), genre of popular music that evolved in the United States during the late 1940s and early 1950s. It Origins of rock and roll, originated from African ...
groups in the 1950s emphasized rhythm, so their
backup band A backup band or backing band is a musical ensemble that typically accompanies a single artist who is the featured performer. The situation may be a live performance or in a recording session, and the group may or may not have its own name, such ...
s generally consisted only of the standard swing band rhythm section of guitar, piano, bass, and drums supporting a
vocalist Singing is the art of creating music with the voice. It is the oldest form of musical expression, and the human voice can be considered the first musical instrument. The definition of singing varies across sources. Some sources define singi ...
, and in some cases omitting the keyboards. The
bass guitar The bass guitar (), also known as the electric bass guitar, electric bass, or simply the bass, is the lowest-pitched member of the guitar family. It is similar in appearance and construction to an Electric guitar, electric but with a longer nec ...
took over from the double bass in the 1950s, and had almost completely taken over the bass role in the 1960s. As the 1960s progressed the term "rhythm section" as used in a pop music context sometimes came to refer to just the bass and drums. For example,
Paul McCartney Sir James Paul McCartney (born 18 June 1942) is an English singer, songwriter and musician who gained global fame with the Beatles, for whom he played bass guitar and the piano, and shared primary songwriting and lead vocal duties with John ...
and
Ringo Starr Sir Richard Starkey (born 7 July 1940), known professionally as Ringo Starr, is an English musician, songwriter and actor who achieved international fame as the drummer for the Beatles. Starr occasionally sang lead vocals with the group, us ...
of the
Beatles The Beatles were an English Rock music, rock band formed in Liverpool in 1960. The core lineup of the band comprised John Lennon, Paul McCartney, George Harrison and Ringo Starr. They are widely regarded as the Cultural impact of the Beatle ...
were referred to as the band's rhythm section. In the 1970s, chordal instruments such as the electric and/or acoustic guitar and various keyboards (piano, electric piano,
Hammond organ The Hammond organ is an electric organ invented by Laurens Hammond and John M. Hanert, first manufactured in 1935. Multiple models have been produced, most of which use sliding #Drawbars, drawbars to vary sounds. Until 1975, sound was created ...
,
clavinet The Clavinet is an electric clavichord invented by Ernst Zacharias and manufactured by the Hohner company of Trossingen, West Germany, from 1964 to 1982. The instrument produces sounds with rubber pads, each matching one of the keys and respond ...
) continued to be used to augment the bass and drums in
soul The soul is the purported Mind–body dualism, immaterial aspect or essence of a Outline of life forms, living being. It is typically believed to be Immortality, immortal and to exist apart from the material world. The three main theories that ...
,
funk Funk is a music genre that originated in African-American communities in the mid-1960s when musicians created a rhythmic, danceable new form of music through a mixture of various music genres that were popular among African-Americans in the ...
, and
reggae Reggae () is a music genre that originated in Jamaica during the late 1960s. The term also denotes the modern popular music of Jamaica and its Jamaican diaspora, diaspora. A 1968 single by Toots and the Maytals, "Do the Reggay", was the first ...
groups. The sound of late 1960s and 1970s rhythm sections was often given a unique tone and sound due to the use of
effects unit An effects unit, effects processor, 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 (music), distortion/overdrive, ...
s. Funk bass players would play through auto-wah or envelope follower pedals. Reggae guitarists would plug into echo pedals. Rock guitarists would run their electric guitars through distortion and
wah pedal A wah-wah pedal, or simply wah pedal, is a type of effects unit, effects pedal designed for electric guitar that alters the timbre of the input signal to create a distinctive sound, mimicking the human voice saying the onomatopoeia, onomatopoe ...
s. Electric piano or clavinet players also used effects. In the 1980s, many rock and pop bands continued to be based around the basic rock rhythm section established by 1960s and 1970s bands: electric bass, drums, and electric guitar or keyboards. In the 1980s, the first widely-affordable digital
synthesizer A synthesizer (also synthesiser or synth) is an electronic musical instrument that generates audio signals. Synthesizers typically create sounds by generating waveforms through methods including subtractive synthesis, additive synthesis a ...
, Yamaha's DX7, was released. The distinctive
FM synthesis Frequency modulation synthesis (or FM synthesis) is a form of sound synthesis whereby the frequency of a waveform is changed by modulating its frequency with a modulator. The (instantaneous) frequency of an oscillator is altered in accordance wi ...
tone of the DX7 is a key part of the sound of many 1980s pop and dance singles. As electronic effects became more sophisticated, with the development of
digital signal processing Digital signal processing (DSP) is the use of digital processing, such as by computers or more specialized digital signal processors, to perform a wide variety of signal processing operations. The digital signals processed in this manner are a ...
, during the 1980s, there was some crossover between the roles played by electronic keyboards and electric guitar. Even though electronic keyboards or organs were the standard instruments used to create sustained "pads" of sound (e.g., held backing chords) for ballads, with the introduction of digital delay pedals and other modern effects, electric guitars could produce similar "pads" or " walls of sound".
The Edge David Howell Evans (born 8 August 1961), better known as the Edge or simply Edge,McCormick (2006), pp. 21, 23–24 is a British-Irish musician, singer, and songwriter. He is best known as the lead guitarist, keyboardist, and backing vocalist o ...
, the guitarist from the rock band U2, often used digital delay and reverb-drenched electric guitar arpeggios (chords played one note after the other) to create a shimmering, sustained "pad" for the group. These arpeggio pads created a sustained sound that was similar to the sound of an electronic keyboard. By the late 1980s, the price of digital effects pedals dropped, making these effects units available to the general public. During the 1980s era, rhythm sections in some styles of pop took an increasing turn towards electronic instruments. A 1980s-era dance pop band might be backed up by a rhythm section of a synth bass,
electronic drum Electronic drums are a modern electronic musical instrument, primarily designed to serve as an alternative to an acoustic drum kit. Electronic drums consist of an electronic sound module which produces the Drum synthesiser, synthesized or Sampler ...
s (or
drum machine A drum machine is an electronic musical instrument that creates percussion sounds, drum beats, and patterns. Drum machines may imitate drum kits or other percussion instruments, or produce unique sounds, such as synthesized electronic tones. A d ...
) and various
synthesizer A synthesizer (also synthesiser or synth) is an electronic musical instrument that generates audio signals. Synthesizers typically create sounds by generating waveforms through methods including subtractive synthesis, additive synthesis a ...
keyboards. In some 1980s and 1990s bands, live human rhythm sections were sometimes replaced by sequenced
MIDI Musical Instrument Digital Interface (; MIDI) is an American-Japanese technical standard that describes a communication protocol, digital interface, and electrical connectors that connect a wide variety of electronic musical instruments, ...
synthesizer rhythm tracks made in the studio. In the 1980s and 1990s, the roots rock scene went in the opposite direction from dance pop; roots rock favoured traditional instruments in the rhythm section such as acoustic piano, acoustic guitar,
mandolin A mandolin (, ; literally "small mandola") is a Chordophone, stringed musical instrument in the lute family and is generally Plucked string instrument, plucked with a plectrum, pick. It most commonly has four Course (music), courses of doubled St ...
, pedal steel guitar,
acoustic bass guitar The acoustic bass guitar (sometimes shortened to acoustic bass or initialized ABG) is a bass instrument with a hollow wooden body similar to, though usually larger than, a steel-string acoustic guitar. Like the traditional electric bass guitar ...
and
upright bass The double bass (), also known as the upright bass, the acoustic bass, the bull fiddle, or simply the bass, is the largest and lowest-pitched string instrument, chordophone in the modern orchestra, symphony orchestra (excluding rare additions ...
. Another 1980s-era trend that helped revive interest in acoustic instruments was the "
MTV Unplugged ''MTV Unplugged'' is an American television series on MTV. It showcases recorded live performances of popular music artists playing acoustic instrument, acoustic or "unplugged" variations of songs. The show aired regularly from 1989 to 1999. F ...
" style of performances, in which a rock band performs with acoustic instruments, including acoustic guitars and an
acoustic bass guitar The acoustic bass guitar (sometimes shortened to acoustic bass or initialized ABG) is a bass instrument with a hollow wooden body similar to, though usually larger than, a steel-string acoustic guitar. Like the traditional electric bass guitar ...
. In rock and pop, rhythm sections range in size from the barest, stripped-down size of the "
power trio A power trio is a rock band format having a lineup of electric guitar, bass guitar and drum kit, leaving out a dedicated vocalist or an additional rhythm guitar or keyboard instrument that are often used in other rock music bands that are quart ...
" (guitarist, bassist, and drummer) and the organ trio (Hammond organist, drummer, and a third instrument) to large rhythm sections with several stringed instrument players (mandolin, acoustic guitar, electric guitar, etc.), multiple keyboard players (e.g., piano, Hammond organ, electric piano, synth), two instruments playing a bass role (e.g., bass guitar and synth bass) and a group of auxiliary percussionists (congas, shakers, etc.) to fill out (or "sweeten") the sound. Some rhythm sections combine electronic/digital instruments that are sequenced, pre-recorded backup tracks and live instruments (including electric, electronic and acoustic instruments).


Musical roles

The drums and bass both supply a rhythmic
pulse In medicine, the pulse refers to the rhythmic pulsations (expansion and contraction) of an artery in response to the cardiac cycle (heartbeat). The pulse may be felt ( palpated) in any place that allows an artery to be compressed near the surfac ...
for the music, and the bass instrument supplies a
harmonic In physics, acoustics, and telecommunications, a harmonic is a sinusoidal wave with a frequency that is a positive integer multiple of the ''fundamental frequency'' of a periodic signal. The fundamental frequency is also called the ''1st har ...
foundation with a
bassline Bassline (also known as a bass line or bass part) is the term used in many styles of music, such as blues, jazz, funk, Dub music, dub and electronic music, electronic, traditional music, traditional, and classical music, for the low-pitched P ...
. The types of basslines performed by the bass guitarist vary widely from one style of music to another. Despite all of the differences in the styles of bassline in most styles of popular music, the bass guitarist fulfills a similar role: anchoring the harmonic framework (often by emphasizing the roots of the chord progression) and laying down the beat (in collaboration with the drummer). The importance of the bass guitarist and the bass line varies in different styles of music. In some pop styles, such as 1980s-era pop and musical theater, the bass sometimes plays a relatively simple part, and the music forefronts the vocals and melody instruments. In contrast, in
reggae Reggae () is a music genre that originated in Jamaica during the late 1960s. The term also denotes the modern popular music of Jamaica and its Jamaican diaspora, diaspora. A 1968 single by Toots and the Maytals, "Do the Reggay", was the first ...
or funk, entire songs may be centered around the bass groove, and the bassline is very prominent in the mix. Similarly, the role of the drummer varies a great deal from one style of music to another. In some types of music, such as traditional 1950s-style country music, the drummer has a rudimentary "timekeeping" role, and the drums are placed low in the mix by the sound engineers. In styles such as
progressive rock Progressive rock (shortened as prog rock or simply prog) is a broad genre of rock music that primarily developed in the United Kingdom through the mid- to late 1960s, peaking in the early-to-mid-1970s. Initially termed " progressive pop", the ...
,
metal A metal () is a material that, when polished or fractured, shows a lustrous appearance, and conducts electrical resistivity and conductivity, electricity and thermal conductivity, heat relatively well. These properties are all associated wit ...
, and
jazz fusion Jazz fusion (also known as jazz rock, jazz-rock fusion, or simply fusion) is a popular music genre that developed in the late 1960s when musicians combined jazz harmony and improvisation with rock music, funk, and rhythm and blues. Electric gui ...
, the drummers often perform complex, challenging parts, and the drums may be given a prominent placement in the mix; as well, the drummer may be often given prominent solo breaks, fills, or introductions that put the spotlight on their technical skills and musicality. In the more experimental forms of
free jazz Free jazz, or free form in the early to mid-1970s, is a style of avant-garde jazz or an experimental approach to jazz improvisation that developed in the late 1950s and early 1960s, when musicians attempted to change or break down jazz conventi ...
and jazz fusion, the drummer may not play the strict "timekeeping" role that is associated with drums in pop music. Instead, the drums may be used more to create textured polyrhythmic soundscapes. In this type of situation, the main pulse is often provided by the bass player rather than the drummer. The rhythm section members sometimes break out of their accompaniment role when they are asked to perform keyboard solos, bass breaks, or drum solos. In genres such as
progressive rock Progressive rock (shortened as prog rock or simply prog) is a broad genre of rock music that primarily developed in the United Kingdom through the mid- to late 1960s, peaking in the early-to-mid-1970s. Initially termed " progressive pop", the ...
,
art rock Art rock is a subgenre of rock music that generally reflects a challenging or avant-garde approach to rock, or which makes use of modernist, experimental, or unconventional elements. Art rock aspires to elevate rock from entertainment to an ar ...
, or
progressive metal Progressive metal (often shortened to prog metal) is a broad fusion music genre melding heavy metal music, heavy metal and progressive rock, combining the loud "aggression" and amplified electric guitar, guitar-driven sound of the former with t ...
, the rhythm section members may play complicated parts along with the
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 ...
(or vocalist) and perform extended solos. In
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. Its roots are in blues, ragtime, European harmony, African rhythmic rituals, spirituals, h ...
groups and
jazz fusion Jazz fusion (also known as jazz rock, jazz-rock fusion, or simply fusion) is a popular music genre that developed in the late 1960s when musicians combined jazz harmony and improvisation with rock music, funk, and rhythm and blues. Electric gui ...
bands, the rhythm section members are often called on to perform improvised solos. In jazz, the drummer may "trade" short solo sections with a
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 p ...
player or trumpet player; this practice, nicknamed "trading fours", typically involves the drummer and the horn player alternating four bar solo sections during a jazz tune. They can also trade eights, twos, ones, or other numbers depending on the musical context.


Variants


Organ trios

In organ trios, the lower
octave In music, an octave (: eighth) or perfect octave (sometimes called the diapason) is an interval between two notes, one having twice the frequency of vibration of the other. The octave relationship is a natural phenomenon that has been referr ...
s of a
Hammond organ The Hammond organ is an electric organ invented by Laurens Hammond and John M. Hanert, first manufactured in 1935. Multiple models have been produced, most of which use sliding #Drawbars, drawbars to vary sounds. Until 1975, sound was created ...
or
electronic keyboard An electronic keyboard, portable keyboard, or digital keyboard is an electronic musical instrument based on keyboard instruments. Electronic keyboards include synthesizers, digital pianos, stage pianos, electronic organs and digital audio work ...
are used as a substitute for bass guitar or double bass. The organist can play the bassline using the bass
pedal keyboard A pedalboard (also called a pedal keyboard, pedal clavier, or, with electronic instruments, a bass pedalboard) is a musical keyboard, keyboard played with the feet that is usually used to produce the low-pitched bass line of a piece of music. A p ...
or using the lower manual. As well, the organist could play right-hand chords and melodies. Organ trios were a widely used type of jazz ensemble in the 1950s and 1960s to play
hard bop Hard bop is a subgenre of jazz that is an extension of bebop (or "bop") music. Journalists and record companies began using the term in the mid-1950s to describe a new current within jazz that incorporated influences from rhythm and blues, gospe ...
. Organ trios are sometimes used in rock as well.
The Doors The Doors were an American rock band formed in Los Angeles in 1965, comprising vocalist Jim Morrison, keyboardist Ray Manzarek, guitarist Robby Krieger and drummer John Densmore. They were among the most influential and controversial rock acts ...
'
keyboardist A keyboardist or keyboard player is a musician who plays keyboard instruments. Until the early 1960s musicians who played keyboards were generally classified as either pianists or organists. Since the mid-1960s, a plethora of new musical instru ...
Ray Manzarek used a
keyboard bass Keyboard bass (shortened to keybass and sometimes referred as a synth bass) is the use of a smaller, low-pitched keyboard with fewer notes than a regular keyboard or pedal keyboard to substitute for the deep notes of a bass guitar or double bas ...
to play the bass lines. Manzarek, guitarist
Robby Krieger Robert Alan Krieger (born January 8, 1946) is an American guitarist and founding member of the rock band the Doors. Krieger wrote or co-wrote many of the Doors' songs, including the hits " Light My Fire", " Love Me Two Times", " Touch Me", and " ...
, and drummer
John Densmore John Paul Densmore (born December 1, 1944) is an American musician. He is best known as the drummer of the Rock music, rock band the Doors and as such is a member of the Rock and Roll Hall of Fame. He appeared on every recording made by the band, ...
would act as an organ trio with the addition of singer
Jim Morrison James Douglas Morrison (December 8, 1943 – July 3, 1971) was an American singer, songwriter, and poet who was the lead vocalist and primary lyricist of the rock band the Doors. Due to his charismatic persona, poetic lyrics, distinctive vo ...
.


Dixieland bands

New Orleans New Orleans (commonly known as NOLA or The Big Easy among other nicknames) is a Consolidated city-county, consolidated city-parish located along the Mississippi River in the U.S. state of Louisiana. With a population of 383,997 at the 2020 ...
or
Dixieland Dixieland jazz, also referred to as traditional jazz, hot jazz, or simply Dixieland, is a style of jazz based on the music that developed in New Orleans at the start of the 20th century. The 1917 recordings by the Original Dixieland Jass Band ( ...
jazz bands occasionally use
tuba The tuba (; ) is the largest and lowest-pitched musical instrument in the brass instrument, brass family. As with all brass instruments, the sound is produced by lip vibrationa buzzinto a mouthpiece (brass), mouthpiece. It first appeared in th ...
, sousaphone, or bass saxophone in place of the
double bass The double bass (), also known as the upright bass, the acoustic bass, the bull fiddle, or simply the bass, is the largest and lowest-pitched string instrument, chordophone in the modern orchestra, symphony orchestra (excluding rare additions ...
that was common in 1920s-era jazz bands. This tradition developed from the origins of New Orleans music in marching bands, which used instruments that could be carried on harnesses or with straps. Marching bands use a mixture of brass, woodwind, and percussion instruments, because all of these instruments can be played while marching.


Other variants

Not all rhythm sections follow the standard model of drummer-bassist-chordal instrument. Some bands have no drummer. In bands without a drummer, one or more instruments from the rhythm section often play in styles that replace the drum kit role—that is laying down the beat and
backbeat In music and music theory, the beat is the basic unit of time, the pulse (regularly repeating event), of the ''mensural level'' (or ''beat level''). The beat is often defined as the rhythm listeners would tap their toes to when listening to a pi ...
. Traditional bluegrass bands typically do not have a drummer. In bluegrass bands, the timekeeping role is shared between several instruments: the upright bass generally plays the on-beats while the mandolin plays chop chords on the off-beats, with the banjo also keeping a steady eighth note rhythm. This distributed nature allows for rhythmic continuity while players take turns highlighting the melody. In funk-oriented groups that do not have a drummer, the electric bass player may take over some of the drummer's role by using slap bass. With slap bass, the bassist slaps the low strings to create a strong "thump" (similar to the bass drum's role) and "snaps" or "pops" the high strings to create a percussive effect (the latter takes over some of the role played by the hi-hat cymbals). In some bands, there may be no bass player—the basslines may be played by the piano player, synth player, or guitarist. Using a guitar player to provide basslines is particularly effective if a guitar player has a seven-string guitar with a low "B" string. Some jazz duos consist of a
singer Singing is the art of creating music with the voice. It is the oldest form of musical expression, and the human voice can be considered the first musical instrument. The definition of singing varies across sources. Some sources define singi ...
accompanied by a single piano player. In these duos, the
jazz piano Jazz piano is a collective term for the techniques pianists use when playing jazz. The piano has been an integral part of the jazz idiom since its inception, in both solo and ensemble settings. Its role is multifaceted due largely to the instru ...
player has a challenging task; they have to provide all of the rhythmic and harmonic foundation that would normally be provided by a full rhythm section. A jazz pianist accompanying a singer in a duo needs to play a deep
bassline Bassline (also known as a bass line or bass part) is the term used in many styles of music, such as blues, jazz, funk, Dub music, dub and electronic music, electronic, traditional music, traditional, and classical music, for the low-pitched P ...
, chords, and fill-in melody lines while the singer is performing. The pianist often improvises an instrumental solo in between vocal melodies. Rarely, a jazz vocalist may perform in a duo with a double bass player. In this duo setting, the bass player may have to use less commonly-used bass techniques to fill out the sound, such as occasionally playing two or three-note double stops (to recreate the chord-playing role normally filled by a guitar or piano) or using percussive slaps on the fingerboard (to recreate some of the percussive elements provided by a drummer). The Canadian bassist Michel Donato has performed in a duo with singer Karen Young, and the pair released several albums in the 1980s and 1990s.


References

{{DEFAULTSORT:Rhythm Section Orchestras Accompaniment Jazz instruments Popular music