Copland also wrote music for several major motion pictures. He won an Academy Award in 1950 for composing the music for the film, "The Heiress." Then, he began experimenting with what is calleda twelve -tone system of composing. His music no longer was as easy to understand, or as popular. Copland stopped composing at the end of the nineteen sixties. Yet he continued to be active as a conductor and speaker. In 1982, Queens College of the City University of New York established the Aaron Copland School of Music.