Their first hit was the song "너만은 모르길" (''Only You Wouldn't Know''), released in 1999 by
Rock Records. Between their fourth and fifth albums, their contract with Rock Records expired and they signed with EMI Music Publishing Korea; a label which also manages other K-pop stars like
DJ DOC and
Baby V.O.X. In late 2006, As One released their fifth album
12 Tears of Farewell, and started their promotional activities with the lead track "십이야" (
12 Nights). In contrast to their usual style, As One released a 19+ rated music video ahead of their October 29, 2014 release date for the single "오늘같은 날" (
For the Night). The music video featured labelmate Jae Woong from 4-member hip hop group Troy and fitness model Kim Hae Na. On June 20, 2016, As One made a comeback with a new single titled "The Pain I Caused". The song is from their sixth album
Outlast, which was released on June 21, 2016. The album features ten tracks along with the lead single, "Don't Say Anything", which was released June 21, 2016. The pair appeared on
JTBC's
Sugarman 3 on December 13, 2019. On August 5, 2025, the duo's management agency Brand New Music confirmed that Lee Min died at age 46 in Seoul, South Korea, thereby ending the group activities. ==Discography==