Yeon Kyu Sung Facts
- Education: Yonsei University
- Cheongju Shinheung High School
- Cheongju Nam Middle School
- Ganggyeong Joongang Elementary School
Yeon Kyu Sung Musicals
- 2013: Great Superstar
Yeon Kyu Sung TV Programs
- Superstar K 4 (Mnet, 2012)
Yeon Kyu Sung TV Drama’s
- Sigh theme for The Running Mates: Human Rights (2019
- Do Not Forget… theme for Possessed (2019)
- New Day theme for Rebel: Thief Who Stole the People (2017).
- My Little Baby theme for My Little Baby (2016)
- Highway Romance theme for Riders: Catch Tomorrow (2015)
- Last Farewell theme for I Order You (2015)
- I Love You theme for My Unfortunate Boyfriend (2015)
- Bluebird’s Dream theme for House of Bluebird (2015)
- Engrave In My Heart theme for Empire of Gold (2013)