Mickey Mouse and Ub Iwerks. Iwerks again served as the head animator, assisted by Johnny Cannon, Les Clark, Wilfred Jackson and Dick Lundy. This short was intended as a parody of Buster Keaton's "Steamboat Bill, Jr.", first released on May 12 of the same year. Although it was the third Mickey cartoon produced, it was the first to find a distributor, and thus is considered by The Disney Company as Mickey's debut. "Willie" featured changes to Mickey's appearance (in particular, simplifying his eyes to large dots) that established his look for later cartoons and in numerous Walt Disney films. The cartoon was
Steamboat Willie The real first cartoon with synchronized sound, was My Old Kentucky Home. "Steamboat Willie" is especially notable for being the first Disney cartoon with synchronized sound, including character sounds and a musical score. Disney understood from early on that synchronized sound was the future of film. It was the first cartoon to feature a fully post-produced soundtrack which distinguished it from earlier sound cartoons such as Inkwell Studios' "Song Car-Tunes" (1924–1927) and Van Beuren Studios' "Dinner Time" (1928). "Steamboat Willie" became the most popular cartoon of its day. Music for "Steamboat Willie" was arranged by Wilfred Jackson and Bert Lewis,