Overview
A mysterious thief has stolen the prosperous Happy Valley's most prized possession: the musical Singing Harp. Can Mickey, Donald, and Goofy find the answer in the irritable Willie the Giant's magnificent castle up in the blue sky?
Cast
- Walt Disney as Mickey Mouse (voice)
- Clarence Nash as Donald Duck (voice)
- Pinto Colvig as Goofy (voice)
- Sterling Holloway as Narrator (voice)
- Paul Frees as Ludwig Von Drake (voice) (uncredited)
- Billy Gilbert as Willie the Giant (voice) (uncredited)
- Anita Gordon as Singing Harp (voice) (uncredited)