Oswald the Lucky Rabbit Mouse cartoon to be filmed was "Plane Crazy" in the summer of 1928, but it was produced as a silent and held back from release. The first Mickey Mouse film with a synchronized soundtrack, "Steamboat Willie", reached the screen that fall and became a major hit, eclipsing Oswald. "Plane Crazy" was later given its own synchronized soundtrack and released on March 17, 1929. Mintz, meanwhile, opened his own studio consisting primarily of former Disney employees, where he continued to produce Oswald cartoons, among them the first Oswald with sound, "Hen Fruit" (1929). While things were going in Mintz's favor, animators
The Walt Disney Company with Disney as a production partner. Walt and Roy Disney formed Disney Brothers Cartoon Studio that same year. More animated films followed after Alice. In January 1926, with the completion of the Disney studio on Hyperion Street, the Disney Brothers Studio's name was changed to the Walt Disney Studio. After the demise of the "Alice" comedies, Disney developed an all-cartoon series starring his first original character, Oswald the Lucky Rabbit, which was distributed by Winkler Pictures through Universal Pictures. The distributor owned Oswald, so Disney only made a few hundred dollars. Disney completed 26 "Oswald" shorts before losing the contract