Johanna Spyri's best-loved children's classic Heidi is affectionately retold in this colorful full-length animated musical motion picture. The famed story has been supplemented with three new unforgettable sequences: A musical review the Nightmare Ballet in which Heidi meets the mountain creatures of the Wunderhorn; a dream fantasy in which Clara Heidi's wheelchair confined friend meets her Prince Charming at a fantastic ball; and Ode to a Rat in which a band of evil but clownish rats led by King Rat are roused into attacking Heidi in a dark cellar. Voices are provided by Lorne Greene as Grandfather Margery Gray as Heidi and Sammy Davis Jr.. as King Rat. Sixteen original songs were written by lyricist Sammy Cahn and composer Burton Lane. Heidi's Song has all the elements to make a thoroughly enjoyable film that children will cherish a lifetime.