Pemeran Four Hands, Two Sonatas

Song Kang (송강)

as Kang Bi O

Pemeran Utama

Lee Jun Young (이준영)

as Choi Jeong Yo

Pemeran Utama

Jang Gyu Ri

as Hong Jae In

Pemeran Utama

Kim Joo Heon

as Do Hyeon Su [Pianist / Bi O & Jeong Yo's teacher]

Pemeran Pembantu

Yoon Se Ah (윤세아)

as Kang Ji Hye [Bi O's mother]

Pemeran Pembantu

Jung Jin Young

as Kang Seung Un [Bi O’s grandfather]

Pemeran Pembantu

Seo Jae Hee

as Yun Seon Ju [Seung Un's wife]

Pemeran Pembantu

Kim Hye Hwa

as Han Hyeon Jeong [Jae In's mother]

Pemeran Pembantu

Kim Min

as Director Kim [Loan shark]

Pemeran Pembantu

Seong No Jin

as Choi Gi Taek [Jeong Yo's father]

Pemeran Pembantu

Lee Myeong Ro

as Cho Hyeon Cheol [Jeong Yo's close brother]

Pemeran Pembantu

Yoo Tae Joo

as Jang Seok Hwan [Bi O's classmate]

Pemeran Pembantu

Lee Sang Jun

as Yun Han Rim [Bi O's classmate]

Pemeran Pembantu

Park Hyeon Seok

Sutradara

Shin Yi Won

Screenwriter