Listen to 수사 Investigation online. 수사 Investigation is an English language song and is sung by Oh Seok Jun and Kim Sae Rom. 수사 Investigation, from the album 투윅스 K-pop Drama Two Weeks (Original Korean TV Series Soundtrack) (Remastered), was released in the year 2017. The duration of the song is 1:35. Download English songs online from JioSaavn.