Jacob Druckman was an American composer whose music explored orchestral color, theatrical expression, and the possibilities of electronic sound. Born in Philadelphia, he studied piano and violin as a child and also played jazz trumpet. His composition teachers included Aaron Copland at Tanglewood and Vincent Persichetti, Peter Mennin, and Bernard Wagenaar at Juilliard. Druckman later taught at Juilliard and became chair of composition at Yale in 1976. His orchestral work Windows won the 1972 Pulitzer Prize for Music. He served as composer-in-residence with the New York Philharmonic. His catalog spans orchestral, vocal, chamber, and electronic music, reflecting a sustained interest in the expressive character of instrumental and vocal timbre.