Fun and Fancy Free
Disney had provided the voice for Mickey Mouse since his debut in 1928, and "Fun and Fancy Free" was the last time he would voice the role regularly, as he no longer had the time or energy to do so. Disney recorded most of Mickey's dialogue in the spring and summer of 1941. Sound effects artist Jimmy MacDonald would become the character's new voice actor, starting in 1948. Disney, however, did reprise the role for the introduction to the original 1955–59 run of "The Mickey Mouse Club".
Mickey Mouse
A large part of Mickey's screen persona is his famously shy, falsetto voice. From 1928 onward, Mickey was voiced by Walt Disney himself, a task in which Disney took great personal pride. However, by 1946, Disney was becoming too busy with running the studio to do regular voice work which meant he could not do Mickey's voice on a regular basis anymore. It is also speculated that his cigarette habit had damaged his voice over the years. After recording the "Mickey and the Beanstalk" section of "Fun and Fancy Free", Mickey's voice was handed over to veteran Disney musician and actor Jimmy MacDonald. MacDonald voiced Mickey in the remainder of the theatrical shorts and for various television and publicity projects up until his retirement in 1977, although Walt would reprise Mickey's voice occasionally until his passing in 1966, such as in the introductions to the original 1955–1959 run of "The Mickey Mouse Club" TV series, the "Fourth Anniversary Show" episode of the Walt Disney's Disneyland TV series that aired on September 11, 1957 and the "Disneyland USA at Radio City Music Hall" show from 1962.