Alice in Wonderland is a 1951 American animated musical fantasy film produced by Walt Disney Productions and based on the Alice books by Lewis Carroll. The 13th of Disney's animated features, the film premiered in London on July 26, 1951 and in New York City on July 28th, 1951. The film features the voices of Kathryn Beaumont (who later voiced Wendy Darling in the 1953 Disney film Peter Pan) as Alice, and Ed Wynn as the Mad Hatter. Disney first attempted unsuccessfully to adapt Alice into an animated feature film during the 1930s. However, he finally revived the idea in the 1940's. The film was originally intended to be a live-action/animated film, however, Disney decides making it an all-animated feature in 1946. The theme song of the same name has since become a jazz standard. While the film was critically panned on its initial release, the movie proved to be ahead of its time and has since been regarded as one of Disney's greatest animated classics, notably one of the biggest cult classics in the animation medium, as well as one of the best film adaptations of Alice.