Santa Claus Is Comin' to Town is a 1970 Christmas stop motion animated television special produced by Rankin/Bass Productions. The film stars Fred Astaire as the narrator S.D. Kluger, Mickey Rooney as Kris Kringle/Santa Claus, Keenan Wynn as the Winter Warlock, and Paul Frees in various roles. The film tells the story of how Santa Claus and several Claus-related Christmas traditions came to be. It is based on the hit Christmas song of the same name, which was introduced on radio by Eddie Cantor in 1934, and the story of Saint Nicholas.