Aaron Copland (14 November 1900 - 2 December 1990) was an American composer, composition teacher, writer and conductor. He was often called "The Dean of American Composers." He was best known for his orchestral works and ballets, but produced chamber works, vocal works, opera, and film scores. Some of Copland’s musical influences include Chopin, Debussy, and Verdi.
Aaron Copland was known for his distinct sound, which is now considered the sound of American music. This sound was created with slowly changing harmonies in open intervals of fourths and fifths. This illustrates the openness of the American landscape. Many of his compositions in the 1930s and 40s were labeled "populist," or deliberately accessible and for the common people.