The program will invite one guest artist in each episode. The guest mustattempt to guess whether the contestant is a skilled vocalist or a tone-deaf contestant without hearing them sing. The guest, with the helpand advice of the Tone-deaf Detective Team, will eliminate 1-2 contestants in each round. Eliminated contestants will then reveal theirsinging ability. If the last person standing is a skilled vocalist, he/she will receive a chance to release a song with the guest. But if he/she is a tone-deaf person, he/she will win 5 million won.