Footage mostly includes "Pink Elephants on Parade" from Dumbo
and "Heffalumps and Woozles" from Winnie the Pooh (1977)
Take note how the slow-dance scene shows how Disney would sometimes recycle some frames of animation; you can see this as it transitions from Pooh footage to Dumbo footage.
The Many Adventures of Winnie the Pooh
Music: The 16th Hour - deadmau5
Editing by John McClatchy