Populist composer credited with developing the American style of composition. He was known as the Dean of American Composers.
He studied first with composer Rubin Goldmark, then abroad with Isidor Philipp, Paul Vidal, and pedagogue Nadia Boulanger.
His musical output was astounding, and he became known for his ballets, 'Appalachian Spring,' 'Billy the Kid,' 'Fanfare for the Common Man,' 'Rodeo,' and Third Symphony.
He kept his homosexual orientation private, as well as his relationships with photographer Victor Kraft, artist Alvin Ross, pianist Paul Moor, dancer Erik Johns, and composer John Brodbin Kennedy.
He taught himself how to conduct and would at times consult his close friend Leonard Bernstein for help in developing his technique and style.