Not that, I think this is good, but since you are selling it, and profiting off of it, wouldn't you have to pay Royalties to Billy Joel, since Piano Man, was his song? I don't believe you can sell someone else's musical composition without compensating them, would sound like a copyright violation.
On top of that, the concept of the song was horrible, the singer was horrible, the harmonica was off. Stuff like this would have been "cool" about 10-15 years ago maybe.