Concerto for Prepared Piano and Ensemble
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Concerto for Prepared Piano and Ensemble is a chamber concerto in one movement for flute, oboe, clarinet, bassoon, horn, trumpet, trombone, tuba, 2 percussion, solo prepared piano, 2nd piano, 2 violins, viola, violoncello, and double bass. The piece is divided into seven sections, beginning with an introduction—a tutti rallentando minus the soloist. The introduction is followed immediately by a cadenza, which introduces the sounds of the prepared piano. Five sections alternating slow and fast tempi are presented, and the piece concludes with a brief, unmeasured duet between the prepared piano and second piano. The piece is structured as an elaborate counterpoint, in which each contrapuntal line is subjected to the continually stretching and compression of event durations over a continuously modulating tempo.