Seo Taiji and Boys
Lee and Kim Jae-duck formed a dance crew called "Quicksilver’" in their hometown of Busan, and was selected as a trainee in Lee Juno's company. Lee Juno was famous as Seo Taiji and Boys' member. At that time Lee Ho-yeon, Daesung Entertainment's CEO, asked him to recommend a idol group member. That is how he became a Sechs Kies' member.