 This rhythm is built up note by note, in the "substitution of beats for rests" technique found in other of Reich's works such as "Music for Pieces of Wood", "Octet", "Music for 18 Musicians", and others.After the rhythm is completely built up, two of the players phase to where they are playing the same pattern one quarter-note apart from each other, and the other bongo players play resulting patterns that can be heard as a result of the combination of the phased patterns.The rest of the piece continues to use the techniques of beat/rest substitution, phasing, and resultant patterns through its four movements.