Main Host
- Kim Jong Kook Main Host
- Lee Teuk Main Host
- Yoo Se Yoon Main Host
Regular Member
- Joon Park[Tone-deaf detective]Regular Member
- Lee Sang Min[Tone-deaf detective]Regular Member
- DinDin[Tone-deaf detective]Regular Member
- Jang Dong Min[Tone-deaf detective] (Ep. 2, 4, 6-7)Regular Member
Guest
- Hwang Chi Yeul(Ep. 1)Guest
- Lee Sun Bin(Ep. 1)Guest
- Kongthap Peak[Contestant] (Ep. 1)Guest
- Cheetah[Tone-deaf detective] (Ep. 1)Guest
- Kim Min Gue[Tone-deaf detective] (Ep. 1)Guest
- Jang Do Yeon[Tone-deaf detective] (Ep. 1-3)Guest
- K. Will(Ep. 2)Guest
- Soyou(Ep. 2)Guest
- Kim Dong Hyun(Ep. 2)Guest
- Ki Hyun(Ep. 2)Guest
- Yoo Yeon Jung(Ep. 2)Guest
- Yoo Seung Woo(Ep. 2)Guest
- Jung Se Woon(Ep. 2)Guest
- Paek In Tae(Ep. 2)Guest
- Elaine[Contestant] (Ep. 2)Guest
- Hwi Chan[Contestant] (Ep. 2)Guest
- Ahn Sol Bin[Tone-deaf detective] (Ep. 2)Guest
- Gray(Ep. 3)Guest
- Simon D(Ep. 3)Guest
- Loco(Ep. 3)Guest
- Bigman[Contestant] (Ep. 3)Guest
- Maria[Contestant] (Ep. 3)Guest
- Don Spike[Tone-deaf detective] (Ep. 3)Guest
- Kim Jong Min(Ep. 4)Guest
- Shin Ji(Ep. 4)Guest
- Han Seung Won[Tone-deaf detective] (Ep. 4)Guest
- Gummy(Ep. 5)Guest
- S.Coups(Ep. 6)Guest
- Wonwoo(Ep. 6)Guest
- Vernon(Ep. 6)Guest
- Dino(Ep. 6)Guest
- Boo Seung Kwan(Ep. 6)Guest
- DK(Ep. 6)Guest
- The8(Ep. 6)Guest
- Woozi(Ep. 6)Guest
- Kim Min Gyu(Ep. 6)Guest
- Hoshi(Ep. 6)Guest
- Joshua Hong(Ep. 6)Guest
- Yoon Jeong Han(Ep. 6)Guest
- Jun(Ep. 6)Guest
- Go Woo Jin[Contestant] (Ep. 6)Guest
- Hong Ju Hyun[Contestant] (Ep. 6)Guest
- Dawon[Contestant] (Ep. 6)Guest
- Jang Gyu Ri[Tone-deaf detective] (Ep. 6)Guest
- Narsha[Tone-deaf detective] (Ep. 6-7)Guest
- Cha Tae Hyun(Ep. 7)Guest
- Hong Kyung Min(Ep. 7)Guest
- Samuel(Ep. 7)Guest
- Kim Hyung Suk[Contestant] (Ep. 7)Guest
- Kang Dae Woong[Contestant] (Ep. 7)Guest
- Park Mi Sun[Tone-deaf detective] (Ep. 7)Guest
- HA:TFELT(Ep. 8)Guest
- Hangzoo(Ep. 8)Guest
- Crush(Ep. 8)Guest
- Han Hee Jun[Tone-deaf detective] (Ep. 8)Guest
- Kim Yong Jin[Tone-Deaf Detective] (Ep. 8)Guest
- Moon Byul(Ep. 9)Guest
- Solar(Ep. 9)Guest
- Wheein(Ep. 9)Guest
- Hwasa(Ep. 9)Guest
- Kang Han[Contestant] (Ep. 9)Guest
- Hwanhee(Ep. 11)Guest
- Lyn(Ep. 11)Guest
- Lee Tae Il[Tone-deaf detective] (Ep. 11)Guest
- Kim Gill Jung[Contestant] (Ep. 11)Guest
- Ahn Ji Young(Ep. 12)Guest
- Odd Child(Ep. 12)Guest
- Park Sang Don[Tone-deaf Detective] (Ep. 12)Guest
- Seo Young Ju[Contestant] (Ep. 12)Guest
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