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?
Production | Walt Disney | Producer |
Directing | Bill Roberts | Director |
Directing | Hamilton Luske | Director |
Visual Effects | Wolfgang Reitherman | Animation |
Writing | Bill Peet | Writer |
Writing | Joe Rinaldi | Writer |
Writing | Homer Brightman | Writer |
Visual Effects | John Lounsbery | Animation |
Visual Effects | Les Clark | Animation |
Editing | Anthony Gerard | Editor |