Presented with a group of six "mystery singers", a guest artist and contestant(s) must attempt to eliminate bad singers from the group without ever hearing them sing, assisted by clues and a celebrity panel over the course of several rounds.[a] At the end of a game, the last remaining mystery singer is revealed as either good or bad by means of a duet between them and one of the guest artists.
The contestant(s) must eliminate one mystery singer at the end of each round, receiving a petty cash if they eliminate a bad singer. At the end of the game, if the contestant(s) decide to walk away, they will keep the money had won in previous rounds; if they decide to risk for the last remaining mystery singer, they win $100,000 if a singer is good, or lose their all winnings if a singer is bad.