Why was Steamboat Willie important in the history of animation?

Steamboat Willie (1928) was a landmark achievement in the history of animation because it was the first Mickey Mouse cartoon to successfully incorporate synchronized sound.12

After observing the impact of sound in motion pictures like The Jazz Singer, Walt Disney recognized the potential for audio in animated films. By producing Steamboat Willie with voices and music, he added a missing element that made the medium’s illusion of life feel significantly more complete and magical. The film was a sensation upon its release, effectively launching Mickey Mouse to stardom and setting a new standard for the industry.12