Composer and pianist Mel Powell died Friday at his home in southern California. He was 75 years old. Powell won the Pulitzer Prize for music in 1990 for his composition, "Duplicates," written for two pianos and orchestra. A student of Paul Hindemith, Powell went on to become chairman of the composition faculty at Yale in the 1960's and director of its' electronic music studio. In 1969, he helped set up the music school at the California Institute of the Arts (CalArts). But Powell was also a jazz musician. At 19, he joined Benny Goodman's band as pianist and arranger. He also worked with Glenn Miller. NPR's Dean Olsher reports.