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!
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!