Science Fair Project Encyclopedia
Rhythm section refers to the musicians whose primary jobs in a jazz or popular music band or ensemble is to establish the rhythm of a song or musical piece, often repeated riffs or ostinatos. It may also refer to the instruments of those musicians.
In theory, any instrument or instruments can provide a steady rhythm (see Jimmy Giuffre's clarinet-valve trombone-guitar trio of the late 1950s, for example), and "rhythm" instruments often take featured solos, especially in jazz.
In some cases, the lower octaves of a piano, organ, or electronic keyboard may substitute for bass guitar. One of the best known examples of this was keyboardist Ray Manzarek of The Doors. Some jazz bands use tuba or other low-pitched instruments in place of the more common double bass.
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