From the main menu of Disc 1, arrow down to highlight the cane underneath Mickey and Pluto. Press Enter for some archival footage of Walt Disney performing the voice of Mickey with Billy Bletcher doing the voice for Pete.
Now go to Bonus Features and arrow down twice. This should highlight a musical note. Press Enter for a promotional piece aimed at Standard Oil Dealers announcing a 1939 ad campaign starring Mickey and the gang.
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Mickey Mouse In Living Color Volume Two by DVD Savant.