cast
-
Hong Isaac
Tae-il
-
Jang Ha-eun
Ji-won
- Seo Young-jae Deok-ho
- Jang Da-hyeon Bok-soon
- Yang Tae-hwan Ki-tae
- Cha Min-ho Bae-dol
- Hwang Da-sol Ho-tae
- Lee Na-woo Dong-hoon
- Hwang Min-jae Chan-gyoo
-
Chae Yeon-jung
Representative Kim
-
Choi Yeon-soo
Gemma
- Go Tae-hee Hae-min
- Ja I-ro Sang-jae
-
Kim Eui-sung
Director Ahn
- Kim Sang-hoon Sang Mi-nem
-
Uhm Yoon Jung
Assistant
- Song In-seop Min-seop
- Kim Yeong-jin Min-seop's Band Drummer
- Jeon Yong-joon Min-seop's Band Pianist
- Park Chan-yeong Cellist
-
Kim Yo-han
High School Pianist
- Park Hyeon-woo Middle School Rapper
- Kim Seong-hoon Famous Musician 1
- Kim Ha-jin Famous Musician 2
- Yang Ji-wan Famous Musician 3
- Jeon Hwa-ryeong Famous Musician 4
- Hyeon Seok-joon Male High School Student
- Woo Hyeon-seo Female High School Student
- Jeong Jae-hoon Finals Contest MC
- Go De-i Ukulele Elementary School Student
- Lee Yeong-seo Big Friend
- Sin Dong-ho Finals Judge 1
- Jang Hong-mi Finals Judge 2
- Lee Won-min Finals Judge 3
- Kim Seong-ah Middle-aged Woman
- Kang Min-seok Hae-min's Dance Team 1
- Kim Yoo-bin Hae-min's Dance Team 2
- Tak Jae-min Hae-min's Dance Team 3
- Lee Hwa-ik Sang-jae Band's Sessions Member 1
- Jung Il-do Sang-jae Band's Sessions Member 2
- Hwang Dae-hyeon Sang-jae Band's Sessions Member 3
- Lee Sang-il Music Video Senior Director
- Kim Mi-kyeong Music Video Staff
- Lee Ji-hyeon Finals Participant 1
- Jeong Woo-jae Finals Participant 2
- Ryoo Han-jong Entertainment Staff
- Jo Pil-seong Musician in the Picture