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?

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Main Cast: Walt Disney, Clarence Nash, Pinto Colvig, Sterling Holloway, Paul Frees, Billy Gilbert, Anita Gordon

Directors: Bill Roberts, Hamilton Luske

Writers: Joe Rinaldi, Bill Peet, Homer Brightman

Editor: Anthony Gerard

Cinematographer:

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