Appalachian Spring is an American ballet created by the choreographer Martha Graham and the composer Aaron Copland, later arranged as an orchestral work. Commissioned by Elizabeth Sprague Coolidge, Copland composed the ballet music for Graham; the original choreography was by Graham, with costumes by Edythe Gilfond and sets by Isamu Noguchi. The ballet was well received at the 1944 premiere, earning Copland the Pulitzer Prize for Music during its 1945 United States tour. The orchestral suite composed in 1945 was played that year by many symphony orchestras; the suite is among Copland's best-known works, and the ballet remains essential in the Martha Graham Dance Company repertoire.