Synopsis
Singing her way through life as life sings back at her, little orphaned Heidi (voice by Margery Gray) is bounced around from her aunt's house, to her grouchy grandfather's place, to a wealthy family in the big city, and never do the vocals subside nor does her spirit droop to anything lower than high "C," probably a fitting classification for this animated film from the Hanna-Barbera studio. ~ Eleanor Mannikka, All Movie Guide