Steamboat Willie
"Steamboat Willie" is especially notable for being the first cartoon with synchronized sound, as well as 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). Disney understood from early on that synchronized sound was the future of film. "Steamboat Willie" became the most popular cartoon of its day.