Aaron Copeland was an American composer, conductor, and music educator who was one of the most influential figures in American classical music. He is best known for his works for orchestra, including Appalachian Spring, Fanfare for the Common Man, and Rodeo. He also wrote music for films, including The Red Pony and Our Town. Copeland was a major figure in the development of American music in the 20th century, and his works are still widely performed today.