He won an Academy Award for The Heiress on his fourth nomination.  Among his Socialist-themed works 
He won an Academy Award for The Heiress on his fourth nomination.  Among his Socialist-themed works were Into The Street May First and an article about proletarian music for The New Masses.  His symphonies include a Short Symphony and an Organ Symphony, and Something Wild and his Clarinet Concerto showed jazz influences.  His ballets include Hear Ye, Hear Ye!, a satire of the American judicial system, and several more famous works.  For ten points, name this American composer of Billy The Kid, Rodeo, and Appalachian Spring,  as well as the Fanfare for the Common Man.
He won an Academy Award for The Heiress on his fourth nomination.  
Aaron {Copland}