Jump over the break to check out Jimmy and Billy Joel loop their voices on Loopy HD for iPad to form a 2-man doo-wop group, singing “The Lion Sleeps Tonight” by The Tokens in 4-part harmony.
https://www.youtube.com/watch?v=cU-eAzNp5Hw
Billy Joel and Jimmy Fallon Form A 2-Man Doo-Wop Group Using Loopy iPad App [video]
