The Whoopee Party is a Mickey Mouse short animated film first released on September 17, 1932.
Characters at the party start off dancing rather sedately to music in the style of 1900, until the food and beverages come out.
The music is a hot jazzy version of Scott Joplin's "Maple Leaf Rag", followed by "Some of These Days" and "Runnin' Wild".
The scene of Mickey dancing with Patricia Pigg was lifted from the 1930 short The Shindig.
[1] The short was released on December 2, 2002, on Walt Disney Treasures: Mickey Mouse in Black and White.