Sechs Kies
After SechsKies disbanded, Sung-hoon was the second member from Sechs Kies to begin a solo career mainly on R&amp;B and ballad. In 2001, he released first album"비상(Bee Sang)" with title song "고백(Confessions)" and most of the Sechs Kies members chorus "1년 되는 날 (1st Anniversary)".