Peter and the Wolf (1946)

An animated dramatization of the 1936 musical composition by Sergei Prokofiev, produced by Walt Disney, with Sterling Holloway providing the voice of the narrator. It was originally released theatrically in 1946 as a segment in Make Mine Music. It was re-issued the following year accompanying a re-issue of Fantasia (as a short subject before the film), then released separately on home video in the 1990s.

More at Wikipedia.