comp

Comping (an abbreviation of accompaniment; or possibly from the verb, to "complement") is the chords, rhythms, and countermelodies that keyboard players (piano or organ), guitar players, or drummers use to support a jazz musician's improvised solo or melody lines. It is also the action of accompanying, and the left-hand part of a solo pianist.The term comping is also an abbreviation of compiling, whereby the best sections of several takes are "comped" into one track.

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