 The basic premise of the show was a musical concert, in which Mickey Mouse conducted an orchestra made up of various Disney characters.Before the concert, guests were loaded into a theater featuring an eight-minute film detailing the history of Mickey's illustrious career and the use of sound in his films, from his debut in "Steamboat Willie" to his role in the feature "Fantasia".The film ended with footage of Mickey and his friends dancing at Disneyland, and Mickey told the guests that it was time for the main show.