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A rhythm section (also called a backup band) is a group of musicians within an ensemble who provide the underlying rhythm and pulse of the accompaniment, providing a rhythmic reference for the rest of the band. Many of the rhythm section instruments, such as keyboards and guitars, also play the chord progression upon which the song is based. The bass instrument plays the bassline that supports the chord progression, typically by emphasizing the roots of the chords. The term is common in modern small musical ensembles, such as bands that play jazz,〔Randel, Don Michael (1999). "Rhythm section" in ''The Harvard Concise Dictionary of Music and Musicians''; p. 560. ISBN 0-674-00978-9〕 country, blues, and rock. In modern rock music, a rhythm guitarist specializes in rhythmic and chordal playing (as opposed to melodic guitar solos and lead melody lines), sometimes repeating quaver, half note or whole note (eighth-note) power chords or strumming open chords. A typical rhythm section comprises a keyboard instrument and/or one or more guitars, a double bass or electric bass (depending on the style of music), and drums (usually acoustic, but in some post-1980s styles, the drums may be electronic).〔 In some styles of music, there may be additional percussionists playing instruments such as the djembe or shakers. The guitars may be acoustic guitars, electric guitars, or a combination of both, depending on the style of music. Some styles of music use multiple keyboard instruments (e.g., piano and Hammond organ) 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 of bass, drums and guitar) or it may be a fairly large ensemble with several keyboardists, several guitarists, auxiliary string players (mandolin, ukulele, etc.), a drummer and percussionists. The largest rhythm sections may be led by a bandleader. ==Instruments== 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 consists 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"). In music industry parlance, the amplifiers and some of the instruments are nicknamed the "backline." The backline typically includes large and heavy items that are hard to transport, including large bass amplifiers and guitar amplifiers, the drum kit (possibly minus the cymbals), a Hammond organ, stage piano, and a keyboard amplifier. Even when a venue or festival provides a "backline", 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. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「rhythm section」の詳細全文を読む スポンサード リンク
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