As One is a South Korean R&B girl group comprising Korean-American singers Lee Min and Crystal. The group debuted in 1999 with the album Day by Day, and released five more albums between 2001 and 2006, with many of these appearing on the Korean charts including You’re Welcome (2001) (number 7), Carolling (2002) (number 31), Never Too Far (2003) (number 4), Restoration (2004) (number 18) as well as 12 Tears of Farewell (2006), collaborating with Kirk Degiorgio on Planeraty Folklore II in the same year. The duo released a series of EPs and non-album singles over the next ten years, particularly The 5 Love Stories We Know (2007), Sponge Remake (2008), Love is Only You (2008), “You Are My Baby” (2011), “Together” (2012), “All Day All Night” (2014) and “After Rain” (2016). In 2016, they released their third album, Outlast, before announcing their hiatus from the music industry in 2017 with the single, “Goodbye for Now”. They returned in 2019 with “It’s ok not to be ok” (feat. LEE DAE HWI) and “February 29th” in 2020. Three years later, their 2016 album Outlast was certified gold, solidifying their status as one of the most notable first-generation K-pop idol groups of all time. Lee Min passed away on August 5, 2025.