Just as “Steamboat Willie” was gaining steam at the box office and launching Mickey Mouse to superstardom, Carl Stalling was scoring the first two Mickey Mouse cartoons: “Plane Crazy” and “Gallopin’ Gaucho.” After some correspondence with Walt Disney, Stalling ended up as the studios first musical director. Because it was complicated to synchronize sound with animations, Walt and Stalling had to work closely with one another to get the two disciplines to work together before they could begin production on the drawings. Walt and Stalling would often argue over what should take precedence in the animated film. Stalling wanted the music to be the first thing to considered; Disney wanted the action and gags to take precedence.