Sheet music:Heigh Ho / Snow White and the Seven Dwarfs

Just as movie studios would later release sound tracks to supplement box-office revenues, the early film industry allied itself with the production of sheet music. Walt Disney considered his 1937 landmark "Snow White and the Seven Dwarfs" - the first full-length animated feature film in history - as much a musical achievement as a cinematic one. Planning the film as a musical, Disney believed that the music should be woven into the story line rather than added as an afterthought. The film features eight songs by Frank Churchill (music) and Larry Morey (lyrics), comprising the first sound track in movie history. Featuring some of the best-known songs in musical history, the film included more musical hits than any other Disney production. In 1938 "The Hit Parade" featured an unprecedented six songs from the film, including the dwarfs' signature work song, "Heigh Ho." Countering criticism that a cartoon would appeal only to children, the film became the biggest box-office success in the history of movies at the time. In 1938 the Motion Picture Academy honored Disney for his pioneering achievement by presenting him with a special Oscar: one large one with seven smaller ones at its side.