Question: 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?
Sentence (from "The Princess and the Frog"): The 49th Disney animated feature film, the film is loosely based on the novel "The Frog Princess" by E. D. Baker, which is in turn based on the Brothers Grimm fairy tale "The Frog Prince".
Relevant evidence: No