![Billy Joel and Jimmy Fallon Form 2-Man Doo-Wop Group Using iPad App [Video]](/images/news/39305/171812/171812-64.png "Billy Joel and Jimmy Fallon Form 2-Man Doo-Wop Group Using iPad App [Video]")
On last night's show, 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.
The app that they used is called Loopy HD and it can be purchased from the App Store for $7.99.
Take a look at the video below!
![Billy Joel and Jimmy Fallon Form 2-Man Doo-Wop Group Using iPad App [Video]](/images/news/39305/419320/419320.jpg "Billy Joel and Jimmy Fallon Form 2-Man Doo-Wop Group Using iPad App [Video]")
The app that they used is called Loopy HD and it can be purchased from the App Store for $7.99.
Take a look at the video below!