Expanding and Contracting

Expanding and Contracting is a meditative work that happens to have intricate mathematical processes underlying it. The piece is in three parts and the instrumentation is open; one part is for any keyboard, strummed, or mallet instrument(s); another part is for any treble melodic instrument(s); and the third part is for any two drums of indefinite pitch. Each part rhythmically expands for the first half of the piece and then contracts for the second half, but each does this according to a different mathematical pattern.