Did Carl Stalling score the music for Steamboat Willie?
…Animation World Magazine, April 1997 and the Wikipedia entry on Stalling, the answer is no, he did not. He did score two out of three of Disney’s first ‘toons, but not Steamboat Willie. Also have a look at Stalling’s entry at imdb.com, which has an extensive list of titles (over 700), of which Stalling was the composer. Steamboat Willie is not one of them.