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?

Where to watch it in Canada

No streaming offer found in Canada for now (it may be in theatres or not yet available).

Cast

Walt Disney

Mickey Mouse (voice)

Clarence Nash

Donald Duck (voice)

Pinto Colvig

Goofy (voice)

Sterling Holloway

Narrator (voice)

Paul Frees

Ludwig Von Drake (voice) (uncredited)

Billy Gilbert

Willie the Giant (voice) (uncredited)

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Anita Gordon

Singing Harp (voice) (uncredited)

Walt Disney — Mickey Mouse (voice)

Walter Elias "Walt" Disney (December 5, 1901 – December 15, 1966) was an American film producer, director, screenwriter, voice actor, animator, entrepreneur, entertainer, international icon, and philanthropist, well-known for his influence in the field of entertainment during the 20th century. Along with his brother Roy O. Disney, he was co-founder of Walt Disney Productions, which later became on

Clarence Nash — Donald Duck (voice)

Clarence Nash (1904–1985) was an American voice actor, best known for providing the voice of Donald Duck for the Walt Disney Studios.

Pinto Colvig — Goofy (voice)

He is probably best known as the voice of Disney's Goofy and the original Bozo the Clown, a part he played for a full decade beginning in 1946. He also provided the voice for Practical Pig, the pig who built the "house of bricks" in the Disney short Three Little Pigs, as well as both Sleepy and Grumpy in Snow White and the Seven Dwarfs, and the barks for Pluto the dog. Colvig worked for not only t