RHYTHM - Sonic action in time or the arrangement of durational sonic patterns or tone lengths that fall on or between a "beat". In Arab music, rhythm is generated from modes (iqa'at) and articulated based upon fixed patterns and improvisation.

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Arab rhythm is/are sonic action in time
Arab rhythm is/are durational sonic patterns
Arab rhythm is/are tone lengths
Arab rhythm fall on or between beats
Arab rhythm is derived from iqa_
Arab rhythm element of Arab music