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, Clarence Nash, Pinto Colvig, Sterling Holloway, Paul Frees, Billy Gilbert,

Genre:Animation, Fantasy, Adventure,

country:United States of America,

Production:Walt Disney Productions,