Is actually *not* the first synchronized sound cartoon.
Walt Disney's rival
Max Fleischer had produced a series of sound Bouncing Ball "Song Car-Tunes", which featured synchronized dialogue and music starting in 1924, the first of which to be released was
Come Take a Trip in My Airship (1924). The first to actually be produced was
My Old Kentucky Home (1926), but that was not was released until June 1926.
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