He was a lead vocalist of the band Boohwal, and left them to release his first solo album, with the title track "Love of a Thousands Years (천 년의 사랑)" that became his signature song in 1999[1][2] but returned to the group in 2019 after 22 years.

"[1] When discussing Boohwal's several vocalists, the band's leader Kim Tae-won said he sang with an authentic soulfulness which made his vocals both sad and beautiful.

[8][9] He has performed a number of OSTs for K-dramas, including "Always" for Goddess of Marriage in 2013, in which he also acted, playing the part of a legendary rocker on hiatus in the citrus plantations of Jejudo, living as his own boss as a free spirit, with his wife.

[3][4] Others include 2014's "Wind Breeze" for Empress Ki,[10] and a rock ballad "Stop Time" in April 2016 for The Royal Gambler.

[11][12] In September 2011, in an appearance on tvN's show Love Song he talked about his divorce, and expressed an apology to his ex-wife and children.