When Mickey's singing piglet grows to enormous adult size and loses his distinctive singing voice, Mickey struggles to figure out how to salvage his musical act.
- Chris Diamantopoulos - Mickey Mouse
- Tony Anselmo - Donald Duck
- Alvin Chea - Adult Piggy
- Elyse Willis - Young Piggy
- Donald's doctor license puts him in Marceline, U.S.A.
- The farm animals from Mary Poppins, as well as the judges from "Dog Show", make cameos.
- There is also an appearance of Mickey's cowboy outfit in "Bronco Busted".
- The end credits music is also played in a country style.
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