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
- Joon Park[Tone-deaf detective]Regular Member
- Shin Dong[Tone-deaf detective]Regular Member
- Jang Do Yeon[Tone-deaf detective] (Ep. 1, 3-4, 7, 10-11)Regular Member
Guest
- P.O(Ep. 1)Guest
- Ahn Jae Hyo(Ep. 1)Guest
- U-kwon(Ep. 1)Guest
- Park Kyung(Ep. 1)Guest
- B-Bomb(Ep. 1)Guest
- Zico(Ep. 1)Guest
- Lee Tae Il(Ep. 1)Guest
- Kim Min Seok[Tone-deaf detective] (Ep. 1)Guest
- Han Hyun Min[Tone-deaf detective] (Ep. 1)Guest
- Microdot[Tone-deaf detective] (Ep. 1-2)Guest
- Minzy(Ep. 2)Guest
- Baek Ji Young(Ep. 2)Guest
- Sung Eun(Ep. 2)Guest
- Song Yu Vin(Ep. 2)Guest
- Kim So Hee(Ep. 2) | [Tone-deaf detective] (Ep. 9)Guest
- Park Bo Sung[Contestant] (Ep. 2)Guest
- Kim Ji Sook[Tone-deaf detective] (Ep. 2)Guest
- Jung Ga Eun[Tone-deaf detective] (Ep. 2)Guest
- Hwang Min Hyun(Ep. 3)Guest
- Lai Kuan Lin(Ep. 3)Guest
- Park Ji Hoon(Ep. 3)Guest
- Park Woo Jin(Ep. 3)Guest
- Bae Jin Young(Ep. 3)Guest
- Kim Jae Hwan(Ep. 3)Guest
- Yoon Ji Sung(Ep. 3)Guest
- Kang Daniel(Ep. 3)Guest
- Lee Dae Hwi(Ep. 3)Guest
- Ong Seong Wu(Ep. 3)Guest
- Ha Sung Woon(Ep. 3)Guest
- Kassy[Tone-deaf detective] (Ep. 3)Guest
- Park Seul Ki[Tone-deaf detective] (Ep. 3, 5)Guest
- Yeri(Ep. 4)Guest
- Wendy(Ep. 4)Guest
- Irene(Ep. 4)Guest
- Seulgi(Ep. 4)Guest
- Yeim[Contestant] (Ep. 4)Guest
- Han Seo Joon[Contestant] (Ep. 4)Guest
- Song Han Hee[Contestant] (Ep. 4)Guest
- Zai.Ro[Tone-deaf detective] (Ep. 4)Guest
- Kim Dong Hyun[Tone-deaf detective] (Ep. 4)Guest
- Kim Yu Bin(Ep. 5)Guest
- Jang Woo Young(Ep. 5)Guest
- Jay B(Ep. 5)Guest
- Kim Won Pil(Ep. 5)Guest
- Boramiyu[Contestant] (Ep. 5)Guest
- Kwon Hyuk Soo[Tone-deaf detective] (Ep. 5)Guest
- Muzie(Ep. 6)Guest
- Park Jung Ah[Tone-deaf detective] (Ep. 6)Guest
- Kim Young Hee[Tone-deaf detective] (Ep. 6)Guest
- Kim Heung Kook[Tone-deaf detective] (Ep. 6)Guest
- Hwasa(Ep. 7)Guest
- Moon Byul(Ep. 7)Guest
- Wheein(Ep. 7)Guest
- Solar(Ep. 7)Guest
- SeeA[Contestant] (Ep. 7)Guest
- Seo Min Kyung[Contestant] (Ep. 7)Guest
- Park Je Up[Tone-deaf detective] (Ep. 7)Guest
- YooA[Tone-deaf detective] (Ep. 7, 12)Guest
- Jo Jung Chi(Ep. 8)Guest
- Choi Jung In(Ep. 8)Guest
- Shin Ye Chan[Contestant] (Ep. 8)Guest
- Narsha[Tone-deaf detective] (Ep. 8)Guest
- Giant Pink[Tone-deaf detective] (Ep. 8)Guest
- Roh Ji Sun[Tone-deaf detective] (Ep. 8)Guest
- Park Jae Jung[Tone-deaf detective] (Ep. 8)Guest
- Shim Chang Min(Ep. 9)Guest
- U-Know(Ep. 9)Guest
- Kim Ju Ri[Contestant] (Ep. 9)Guest
- Evan[Tone-deaf detective] (Ep. 9)Guest
- Alberto Mondi[Tone-deaf detective] (Ep. 9)Guest
- Ha Dong QN(Ep. 10)Guest
- Realslow(Ep. 10)Guest
- Jang Hye Ri[Contestant] (Ep. 10)Guest
- EDEN[Tone-deaf detective] (Ep. 10)Guest
- Kim Min Gue[Tone-deaf detective] (Ep. 10)Guest
- Baekho(Ep. 11)Guest
- Aaron Kwak(Ep. 11)Guest
- Ren(Ep. 11)Guest
- Kim Jong Hyeon(Ep. 11)Guest
- Carson Allen[Contestant] (Ep. 11)Guest
- Yoo Sung Nyeo[Contestant] (Ep. 11)Guest
- Jang Moon Bok[Tone-deaf detective] (Ep. 11-12)Guest
- Kim Tae Won(Ep. 12)Guest
- Kim Kyung Ho(Ep. 12)Guest
- Park Wan Kyu(Ep. 12)Guest
- Lee Gook Joo[Tone-deaf detective] (Ep. 12)Guest
- Han Hee Jun[Tone-deaf detective] (Ep. 12)Guest
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