Robert Plant stopped by "The Tonight Show" on Friday, in promotion of his recently released solo album, "Lullaby and... The Ceaseless Roar." As he did with Billy Joel, Jimmy Fallon enlisted the Led Zeppelin singer's talents to form a two-man doo-woop group, with the assistance of the iPad app Loopy.
"This looks like one of them funny shops in Amsterdam!" Plant joked as he was handed the chrome microphone. Building up layer by layer, the duo put together a brief, enchanting rendition of Gene Chandler's 1962 hit "Duke of Earl," the two switching lead, the Roots eventually providing some extra background harmonies.
Plant then took the stage with his band, the Sensational Space Shifters to perform the songs "Rainbow" and "Turn It Up" off of the new album. Watch the stellar performances below.