Heidi's Song is a 1982 American animated musical feature film whose voice cast included an American singer who at the age of three began his career in what?
Heidi's Song:  Among the voice cast are Lorne Greene as Grandfather, Margery Gray as Heidi and Sammy Davis Jr. as Head Ratte. Sammy Davis Jr.:  At the age of three, Davis began his career in vaudeville with his father and Will Mastin as the Will Mastin Trio, which toured nationally.
i don't know