Aaron Copland Was a famous American composer, Composition teacher , writer and conductor . He was born in New York City in Nov 1900. Copland studied music in New York and France . Copland was one of the important figures in American music of the twentieth century. He won the Pulitzer Prize for music in 1945 .He wrote a book about music "What to Listen for in music " 1939 ; 1957 ; reprinted and published by McGraw - Hill Book Company . Copeland explain the basic principle of classical music and help everyone to understanding fundamental of music . He described the way composers write music and additionally how they really hear it out . He discusses three level of listening to music : sensuous ,expressive and sheerly musical. What