Jimmy Fallon, Billy Joel and an iPad Form Their Own Doo-Wop Group - VIDEO

Billy Joel was on The Tonight Show last night (March 20) and he and host Jimmy Fallon along with an app called the Looper formed their very own doo-wop group. It was perfection.

The duo (and their iPad) sang a rather impressive version of "The Lion Sleeps Tonight" with four-part harmony.

We don't know about you guys, but we think Jimmy Fallon's falsetto is hilariously awesome.

Of course he couldn't even hope to compare to Billy Joel. Way to be the best sport ever dude. That was amazing.

It was also probably the best thing the Looper app will ever get to do. Not to mention better than Looper. Because no time travel paradoxes!