Aaron Copland shaped American classical music by drawing directly from vernacular sources: folk songs, hymns, and popular melodies. His gift was transforming these materials into concert works that sounded both sophisticated and unmistakably rooted in American culture. Copland's vocal music deserves the same attention as his orchestral masterpieces, and pieces like The Little Horses show his skill at setting simple melodies with harmonic depth.
Beyond composition, Copland was a fierce advocate for music education and democratic access to classical music. He wrote extensively about composition, guest conducted orchestras, and believed young musicians should encounter the best of American musical tradition alongside European classics.