Complex sentence: He studied music at the University of Denver, served as an Army medic in World War II, where he played piano and did musical arrangements for the Army band, and graduated from the Juilliard School of Music in 1949.
Split into simpler sentences: He studied music at the University of Denver, served as an Army medic in World War II, where he also played piano and did musical arrangements for the Army band. Perito graduated from the Juilliard School of Music in 1949.