Last week Jimmy Fallon and Billy Joel looped their voices on an iPad app to form a 2-man doo-wop group singing "The Lion Sleeps Tonight" by The Tokens in 4-part harmony. It. Was. Awesome!

I've heard a lot of people complaining about the show since Jimmy took over and I just don't understand the complaints. I think he's doing a FANTASTIC job! If Billy Joel had been on with Leno, he would of just made a bunch of lame jokes and asked him a series of dumb questions.

With get this:

For anyone who doesn't remember the original, here's that: