Pemeran I Wanna Hear Your Song

Kim Se Jeong (김세정)

as Hong Yi Young

Pemeran Utama

Yeon Woo Jin

as Jang Yun / Jang Do Hun

Pemeran Utama

Park Ji Yeon

as Ha Eun Joo

Pemeran Utama

Song Jae Rim

as Nam Joo Wan

Pemeran Utama

Kim Sang Gyun

as Moon Jae Hyung [A hip hop dancer and a barista]

Pemeran Pembantu

Yoo Geon

as Michael Lee [The senior timpanist of the orchestra]

Pemeran Pembantu

Yoon Joo Hee

as Yun Mi Rae [Director of planning and promotion for the orchestra]

Pemeran Pembantu

Jo Mi Ryung

as Seo Soo Hyang [The youngest daughter of a chaeobol family]

Pemeran Pembantu

Lee Jung Min

as Choi Seo Joo [Fluteist of the Hagyo Municiple Orchestra]

Pemeran Pembantu

Song Young Gyu

as Kang Myung Seok [Music Professor]

Pemeran Pembantu

Hwang Geum Byul

as Wang Mi Hyang [Fluteist of the Hagyo Municiple Orchestra]

Pemeran Pembantu

Koo Bon Woong

as Yoon Young Gil [Truck driver]

Pemeran Pembantu

Lee Seung Hyung

as Ko Min Joong [General manager of the orchestra]

Pemeran Pembantu

Hong Seung Hee (홍승희)

as Yang Su Jeong [Secretary]

Pemeran Pembantu

KoN

as Jo Han Seok [Violinist of the Hagyo Municiple Orchestra]

Pemeran Pembantu

Kim Tae Yeon

as Hong Yi Young [Young]

Pemeran Pembantu

Lee Shi Won

as Hong Soo Young [Yi Young's cousin]

Pemeran Pembantu

Jung Sung Mo

as Jang Seok Hyun [Jang Yoon's father]

Pemeran Pembantu

Yoon Bok In

as Park Young Hee [Soo Young's mother]

Pemeran Pembantu

Park Chan Hwan

as Hong Ji Seop [Soo Young's father]

Pemeran Pembantu

Lee Byung Joon

as Song Jae Hwan [Yi Young's teacher]

Pemeran Pembantu

Jo Yoo Jung

as Yoo Jenny [Yi Young's best friend]

Pemeran Pembantu

Kim Chang Hoe

as Choi Ki Sang [Jang Yoon's friend]

Pemeran Pembantu

Jung Soo Young

as Gong Seon Mi [Pianist who attempted suicide] (Ep.1, 9, 11)

Bintang Tamu

Lee Chae Kyung

as Su In Kim [Pianist]

Bintang Tamu

Park Geon Rak

as [Detective] (Ep. 24-25, 28, 30-31)

Bintang Tamu

Kim Min Joon

as Jang Yoon [Young]

Bintang Tamu

Ko Jung Min

Bintang Tamu

Na Seul Gi

Bintang Tamu

Jo Ah Young

Bintang Tamu

Park So Young

Bintang Tamu

Moon Chang Jun

as [Man cleaning kettledrum]

Bintang Tamu

Lee Na Hyun

as [Neighborhood woman]

Bintang Tamu

Kim Ji Eun

as [1st]

Bintang Tamu

Choi Na Moo

as [Yo Young's friend] (Ep. 2)

Bintang Tamu

Kim Shi Hoo

as Kim Ian / Jang Yoon [Jang Yoon's younger brother] (Ep.4-5, 8, 10, 12, 16, 18, 28, 30)

Bintang Tamu

Park Hye Jin

as [Joo Wan's grandmother] (Ep.13-14, 18, 21-24, 31)

Bintang Tamu

Im Ji Gyu

as [Hong Yi Young's blind date] (Ep.12)

Bintang Tamu

Kim Gwang Su

Cinematography

Lee Jung Mi

Sutradara

Kim Min Ju

Screenwriter