Jang Hye Jin of MBC's 'I Am a Singer' and Super Junior's Yesung of KBS's 'Immortal Song 2' have come together for a special duet digital single titled "Cooperation Part 1"! Composed by Park Hae Woon and written by Kang Eun Kyung, their title track, "Behind You", is the first time the two are working together.�Jang Hye Jin has a history of collaborative hits like Vibe's "That Man and That Woman", so a lot of attention is being put on this release. Jang Hye Jin's agency, Can Entertainment said, "The melody will never leave your ears once you listen to it, and the lyrics will also leave quite the impression.�The two brought together their vocal talents and emotions to move the heart." Check it out below and remember to support the artist(s) by purchasing the music. Source + Photos: Mydaily via Naver