Cast
Hong Isaac
Tae-il
Jang Ha-eun
Ji-won
SY
Seo Young-jae
Deok-ho
JD
Jang Da-hyeon
Bok-soon
YT
Yang Tae-hwan
Ki-tae
CM
Cha Min-ho
Bae-dol
HD
Hwang Da-sol
Ho-tae
LN
Lee Na-woo
Dong-hoon
HM
Hwang Min-jae
Chan-gyoo
Chae Yeon-jung
Representative Kim
Choi Yeon-soo
Gemma
GT
Go Tae-hee
Hae-min
JI
Ja I-ro
Sang-jae
Kim Eui-sung
Director Ahn
KS
Kim Sang-hoon
Sang Mi-nem
Uhm Yoon Jung
Assistant
SI
Song In-seop
Min-seop
KY
Kim Yeong-jin
Min-seop's Band Drummer
JY
Jeon Yong-joon
Min-seop's Band Pianist
PC
Park Chan-yeong
Cellist
Kim Yo-han
High School Pianist
PH
Park Hyeon-woo
Middle School Rapper
KS
Kim Seong-hoon
Famous Musician 1
KH
Kim Ha-jin
Famous Musician 2
YJ
Yang Ji-wan
Famous Musician 3
JH
Jeon Hwa-ryeong
Famous Musician 4
HS
Hyeon Seok-joon
Male High School Student
WH
Woo Hyeon-seo
Female High School Student
JJ
Jeong Jae-hoon
Finals Contest MC
GD
Go De-i
Ukulele Elementary School Student
LY
Lee Yeong-seo
Big Friend
SD
Sin Dong-ho
Finals Judge 1
JH
Jang Hong-mi
Finals Judge 2
LW
Lee Won-min
Finals Judge 3
KS
Kim Seong-ah
Middle-aged Woman
KM
Kang Min-seok
Hae-min's Dance Team 1
KY
Kim Yoo-bin
Hae-min's Dance Team 2
TJ
Tak Jae-min
Hae-min's Dance Team 3
LH
Lee Hwa-ik
Sang-jae Band's Sessions Member 1
JG
Jeong Gwang-hee
Sang-jae Band's Sessions Member 2
HD
Hwang Dae-hyeon
Sang-jae Band's Sessions Member 3
LS
Lee Sang-il
Music Video Senior Director
KM
Kim Mi-kyeong
Music Video Staff
LJ
Lee Ji-hyeon
Finals Participant 1
JW
Jeong Woo-jae
Finals Participant 2
RH
Ryoo Han-jong
Entertainment Staff
JP
Jo Pil-seong
Musician in the Picture
