Minimalist pioneer Terry Riley was among the most revolutionary composers of the postwar era; famed for his introduction of repetition into Western music motifs, he also masterminded early experiments in tape loops and delay systems which left an indelible mark on the experimental music produced in his wake. Riley was born June 24, 1935 in Colfax, California, and began performing professionally as a solo pianist during the 1950s; by the middle of the decade he was studying composition in San Francisco and Berkeley, where among his classmates was fellow minimalist innovator La Monte Young.