I Wanna Hear Your Song

Yeon Woo-jin

as

Jang Yoon

Kim Se-jeong

as

Hong Yi-Young

Song Jae-rim

as

Nam Joo-Wan

Park Ji-yeon

as

Ha Eun-Joo

Lee Si-won

as

Hong Soo-Young

Yoon Joo-hee

as

Yoon Mi-Rae

A-TOM

as

Moon Jae-Hyeong

Yoo Gun

as

Michael Lee

Park Chan-hwan

as

Hong Ji-Sub

Yoon Bok-in

as

Park Young-Hee