To Spring is a 1936 animated musical short produced by Harman and Ising for the MGM cartoon studio's Happy Harmonies series. Although the production credit goes to Harman and Ising this short was actually the first cartoon to be directed by the future cartoon giant William Hanna, along with animator Paul Fennell. It is one of just three MGM cartoons that are in the public domain, and the only Happy Harmonies short in the public domain. ()