Main Host
- Kim Jong Kook Main Host
- Lee Teuk Main Host
- Yoo Se Yoon Main Host
Regular Member
- Kim Sang Hyuk[Tone-deaf detective]Regular Member
- Lee Sang Min[Tone-deaf detective]Regular Member
- Heo Kyung Hwan[Tone-deaf detective]Regular Member
- Hong Yoon Hwa[Tone-deaf detective]Regular Member
- Jang Woo Young[Tone-deaf detective]Regular Member
Guest
- Rain(Ep. 1)Guest
- TAG[Tone-deaf detective] (Ep. 1)Guest
- Joon Park[Tone-deaf detective] (Ep.1)Guest
- Moon Hyun Bin[Tone-deaf detective] (Ep. 1)Guest
- Na Tae Joo[Tone-deaf detective] (Ep. 1, 3)Guest
- Lee Mi Joo[Tone-deaf detective] (Ep. 1, 4-6, 10-12)Guest
- Choi Jung Chul[Contestant] (Ep. 1)Guest
- Kim Soo Ro(Ep. 2)Guest
- Im Hyung Joon[Tone-deaf detective] (Ep. 2)Guest
- Leedo[Tone-deaf detective] (Ep. 2)Guest
- Keon Hee[Tone-deaf detective] (Ep. 2)Guest
- Kim Ji Sook[Tone-deaf detective] (Ep. 2, 4, 6, 9-10, 12)Guest
- Ha Ha(Ep. 3)Guest
- Byul(Ep. 3)Guest
- Chuu[Tone-deaf detective] (Ep. 3)Guest
- Lee Hyun Yi[Tone-deaf detective] (Ep. 3)Guest
- Kim Feel(Ep. 4)Guest
- Ha Dong QN(Ep. 4)Guest
- Hwang In Hyuk[Contestant] (Ep. 4)Guest
- Jung Han Hae[Tone-deaf detective] (Ep. 4, 6, 8-12)Guest
- Baek Ji Young(Ep. 5)Guest
- Kang Daniel(Ep. 5)Guest
- Park Jun Hee[Tone-deaf detective] (Ep. 5)Guest
- Soyul[Tone-deaf detective] (Ep. 5)Guest
- Lee Dong Hun[Tone-deaf detective] (Ep. 5)Guest
- The One[Special Appearance] (Ep. 5)Guest
- Key(Ep. 6)Guest
- Choi Min Ho(Ep. 6)Guest
- Lee Tae Min(Ep. 6)Guest
- Onew(Ep. 6)Guest
- GN[Contestant] (Ep. 6)Guest
- Suh Dong Joo[Tone-deaf detective] (Ep. 6)Guest
- Ha Sung Woon[Tone-deaf detective] (Ep. 6)Guest
- Song Ga In(Ep. 7)Guest
- Lee Han Gyul[Tone-deaf detective] (Ep. 7)Guest
- Kim So Yeon[Contestant] (Ep. 7)Guest
- Ye Sung(Ep. 8)Guest
- Lee Dong Hae(Ep. 8)Guest
- Choi Si Won(Ep. 8)Guest
- Shin Dong(Ep. 8)Guest
- Kim Ryeo Wook(Ep. 8)Guest
- Eunhyuk(Ep. 8)Guest
- Kang Yoon Jung[Contestant] (Ep. 8)Guest
- Solar(Ep. 9)Guest
- Hwasa(Ep. 9)Guest
- Wheein(Ep. 9)Guest
- Moon Byul(Ep. 9)Guest
- OCYAN[Contestant] (Ep. 9)Guest
- Kwon Ik Hwan[Contestant] (Ep. 9)Guest
- Choi Ye Na[Tone-deaf detective] (Ep. 9)Guest
- Kwon Eun Bi[Tone-deaf detective] (Ep. 9)Guest
- Hwang Chi Yeul(Ep. 10)Guest
- Kim Won Ki[Contestant] (Ep. 10)Guest
- Jang Hyuk(Ep. 11)Guest
- Hong Kyung Min[Tone-deaf detective] (Ep. 11)Guest
- Ahn Jae Wook(Ep. 12)Guest
- Kang Yi Suk[Contestant] (Ep. 12)Guest
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