The Daydreamer (1966)

Director: Jules Bass
Cast: Jack Gilford, Margaret Hamilton, Patty Duke, Paul O'Keefe, Ray Bolger, Robert Harter, Tallulah Bankhead, Victor Borge

Synopsis:

A young Hans Christian Andersen goes in search of knowledge in the Garden of Paradise in order to make his studies easier. Each time he falls asleep, he experiences in his dreams the different characters he would later write about in fairy tales including The Little Mermaid, Thumbelina, and The Emperor’s New Clothes.