In the game, each player picks a card with a different popular song on it. The person then chooses a microphone from the box, with each one capable of producing a different voice effect.
Adams led things off with a deep baritone rendition of “Work” by Rihanna. Fallon followed up with a version of Justin Bieber‘s “Sorry” that sounded like it was sung by a chipmunk hooked up to a helium tank.
For the final round, Fallon and Adams sang a duet of “You’re the One That I Want” from the hit musical “Grease.”