This is a fun, early Ray Harryhausen cartoon… it is clunky compared to much of his later work (Harryhausen is probably most famous for the stop motion animation in The Clash of the Titans and the Sinbad movies), but very charming nonetheless. You can already see what a talented animator he is… he puts a lot of subtle detail into the characters’ movements.
He has some pretty interesting verses I hadn’t heard in there for Old Mother Hubbard.