Includes performance notes. "Circle music is indeterminate with respect to form, requiring the performers to make spontaneous decisions as to which of approximately 15 musical fragments will be heard at any given moment. The order of events and the resulting relationships between the two parts are therefore different each time the piece is performed"--Program notes. Piano part on leaves 1-2; horn part on leaves 3-4. Cover title. Duration: approximately 8 min. Staff notation.