Yoon Sang Hyun,�who is mostly known for his acting career, has returned to music activities by releasing an OST for his new moving 'Tone-Deaf Clinic'. The new song, "Run & Run" will serve as one of the main theme songs for the lead couple's budding romance.

'Tone-Def Clinic' is a movie with a romantic comedy plot centered around a woman who's decides that the only way to win the man of her dreams is to 'conquer her terrible tone-deaf singing'. Yoon Sang Hyun will help the woman improve her singing and fall in love in the process.

Listen to Yoon Sang Hyun's latest bright new single below. Do you think it fits the movie?