It begins as an Old Spice hair care products ad. Then, curiously, features the hair leaving the subject's head, and moving towards a keyboard. At that point, you can enter the title of any Huey Lewis song you like, and the hair will play it.
As an interactive thing, it's awesomely weird. As a commercial for hair products, it's exceedingly strange in its use of baldness.
Check it out below (hit play if it doesn't start right away) and see if you can stump the hair with a song title.