Kim Jong Kook Sings "How Come You Don't Know?" for "Good Doctor" OST (Music Video)

Singer Kim Jong Kook, more popular now as Spartakooks for his character on the variety show “Running Man,” brings his unique voice back to the spotlight with his participation in the OST for the currently airing KBS drama “Good Doctor.”

Kim Jong Kook sings the ballad track “How Come You Don’t Know?” written by Jo Young Soo who also wrote Kim Jong Kook’s 2005 release “Walking in One Spot.”

The music video shows scenes of Joo Won, who plays the male lead character, falling in love with the female lead, Moon Chae Won. The sweet, sad, and sometimes happy scenes fit well with Kim Jong Kook’s voice, bringing up the emotions of the listener.

 The “Good Doctor OST Part 5” is now available for purchase through various online sites.