Lee began his musical career as a bassist in a band supporting pop singerKim Wan-sun. He received an offer for a solo debut from Kim Kwangsoo, now head of MBK Entertainment, in 1990 and released an album incorporating synthpop elements entitled Vol.1 to commercial success.Vol.1 was followed with Vol.2 Part 1 in 1991 and Vol.2 Part 2 in 1993. Vol.2 was the more avant-garde and experimental of the two albums but still found commercial success. The title song, "가려진 시간 사이로 " was especially popular. Lee's third album release, Renacimiento in 1996, consists of remakes of songs from his previous albums sung by French, Italian and American vocals with redone lyrics. Renacimiento was one of the first mainstream albums in Korea incorporating the worldmusic genre and was also popular. Yoon Sang also released a techno album entitled Golden Hits as part of the music collaborative project "NoDance" with rock artist Shin Hae-chul. After releasing 移徙 이사 in 2002, Yoon Sang worked on composing and lyric-writing for SM Entertainment, penning songs for BoA and TVXQ, among other artists. In 2003 he released There Is A Man..., his fifth album, which incorporated rap, Latin, and electronic dance music. A track from that album entitled "길은 계속된다 " also incorporated glitch music. In 2008, Lee released a tribute album called YOONSANG SONGBOOK : Play With Him! with covers by many Korean groups, including electronic duo Peppertones and rock band My Aunt Mary. In 2009, Lee released an eponymous glitch-focused album as part of project group called "mo:tet " with fellow Korean musicians Kayip and Superdrive. The group was formed while Lee spent two semesters at the NYUSchool of Music Technology. Both Kayip and Superdrive were experienced with electronic and IDM-focused music and Lee wanted to expand awareness of these types of music domestically. They finished producing the record by sending files over email and MySpace and held a showcase for the album at Hongik University. In 2015, Yoon Sang participated in the Infinite Challenge Music Festival and was partnered with cast memberJeong Jun-ha. In 2019, he was a judge in the JTBCtalent showSuperband.
