What song does Pee-wee Herman dance to in Pee-wee's Big Adventure?

I'm not sure there will ever be another children's character as wonderfully strange and joyful as Pee-wee Herman, conceived and played brilliantly by the late, great Paul Reubens.

Between The Pee-wee Herman Show, a stage show developed by Reubens that features more adult humor, and the children's TV series Pee-wee's Playhouse, there was the perfectly balanced Pee-wee's Big Adventure in 1985. For most of us, this was the first time we met the character, and whoo-boy did it leave an impression.

For my money, it's hard to go wrong with the classic gag of putting an unlikely character in the middle of a bunch of criminals or tough guys and winning them over. And Pee-wee does it brilliantly when he dances on a bar for a bunch of rowdy bikers.

What song was he dancing to?