VIDEO : Jimmy Fallon, Joseph Gordon-Levitt Cover Rihanna as Barbershop Quintet

Joseph Gordon-Levitt is a skilled lip-syncer, as he proved during his last appearance on The Tonight Show when he squared off against Jimmy Fallon and Stephen Merchant. But the actor is equally impressive using his real voice. Levitt became a temporary fifth member of Fallon's barbershop quartet during Thursday's episode, adding some crooner pizzazz to Rihanna's "Bitch Better Have My Money." The Ragtime Gals, decked out in their usual striped jackets, take a bubbly approach to Rihanna's thumping trap track, layering their voices into complex harmonies.