R&B vocalist Fly to the Sky's Hwanhee will be returning with a song for the 'Orange Marmalade' OST.

SEE ALSO: Min Hee Jin exposes Bang Si Hyuk's text messages & denies she was involved in GFriend's contract termination

Hwanhee will be singing the main theme "It Hurts" for the KBS Friday drama, and his agency H2 Media revealed the above photo of the singer giving the song's lyrics his full attention in the studio. He's previously been the voice behind OSTs for 'Beethoven's Virus', 'Fashion 70's', 'Road Number 1', and more.

"It Hurts" will be released as a digital single on April 22, while 'Orange Marmalade' will premiere on May 15. Stay tuned for what's sure to be a beautiful, emotional song and great drama!