As One () was a South Korean R&B duo consisting of Korean-American singers Lee Min and Crystal. The group debuted in 1999 with the album Day by Day, and released five more albums before announcing their hiatus from the music industry in 2017 with the single, "Goodbye for Now". The group officially reunited in 2019, and continued to release music until member Lee Min's death in 2025.
Career 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 2012, the duo signed to Brand New Music.
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 Studio albums Title Album details Peak chart positions Sales Studio albums:
Compilation albums:
Day By Day Released: November 23, 1999 Label: Rock Records Formats: CD, cassette 27 KOR: 92,843 You're Welcome () Released: August 16, 2001 Label: Rock Records Formats: CD, cassette 7 KOR: 131,461 Carolling (Christmas album) Released: November 28, 2002 Label: Rock Records Formats: CD, cassette 31 KOR: 14,645 Never Too Far Released: March 14, 2003 Label: Rock Records Formats: CD, cassette 4 KOR: 51,095 Restoration Released: November 16, 2004 Label: DR Music Formats: CD, cassette 18 KOR: 11,385 12 Tears Of Farewell () Released: November 17, 2006 Label: Lutherson Entertainment Formats: CD, cassette — Outlast Released: June 20, 2016 Label: Brand New Music Formats: CD, digital download 40
Compilation and live albums Title Album details Peak chart positions Sales One + One Released: June 28, 2000 Label: Rock Records Formats: CD, cassette 36 KOR: 31,167 As One Live Released: May 23, 2002 Label: Rock Records Formats: CD, cassette — Forever As One Released: November 19, 2003 Label: Rock Records Formats: CD, cassette —
Extended plays Title Album details Peak chart positions Sales So Romantic () Released: March 13, 2007 Label: Lutherson Entertainment Formats: CD, digital download — Sponge Remake 2008 As One Released: April 3, 2008 Label: Sponge Entertainment Formats: CD — You Only Love () Released: September 24, 2008 Label: NHN Bugs Formats: CD — Simply As One Released: October 15, 2013 Label: Brand New Music Formats: CD, digital download 40
Singles Title Year Peak chart positions Sales Album As lead artist:
Collaborations:
Soundtrack appearances:
"For You Not to Know" () 1999 rowspan="15" rowspan="19" Day By Day "Love+" () 2000 "Day By Day" "Ring My Bell" "You're Welcome" () 2001 You're Welcome "Want and Resent" () "Rockin' Around the Christmas Tree" 2002 Carolling "Mr. A-Jo" 2003 Never Too Far "I Hope Not" () "Great Legacy" () 2004 Restoration "Twelve Nights" (十二夜) () 2006 12 Tears Of Farewell "Jingle Bell Rock" "Zza Zza La" 2008 Sponge Remake 2008 "Kiss Me" "You Only Love" () You Only Love "Sonnet" 2010 37 rowspan="4" "History" () — "You Are My Baby" 2011 67 "Nepa Song" () — "Monologue" () 53 KOR: 384,806 Simply As One "The Lie" () 28 KOR: 312,683 rowspan="3" "Only U" 2012 20 KOR: 318,434 "Day By Day 2012" 25 KOR: 181,418Cumulative sales of "Day By Day 2012":
"Awkward Love" () 2013 37 KOR: 164,783 Simply As One "What Are We?" () 15 KOR: 155,797 "Want and Resent 2013" () 20 KOR: 195,730 rowspan="2" "All Day All Night" 2014 — "For The Night" () 97 KOR: 21,050 Outlast "Even For 1 Minute" () 2015 16 KOR: 105,469 "After Rain" () 2016 — KOR: 18,729 "Don't Say Anything" () — KOR: 21,411 "The Pain I Caused" () 67 KOR: 33,045 "Something Like Farewell" () — KOR: 15,925 rowspan="10" "Goodbye for Now" () 2017 — rowspan="9" "It's OK Not to Be OK" () 2019 194 "February 29th" 2020 — "Something Like a Miracle" 2023 — "Winter Wonderland" — "Better" 2024 — "Still My Baby" 2025 — "Happy Birthday to You" — "Until Always" —
Collaborative singles Title Year Peak chart positions Sales Album "Come To Me Again" () 2007 rowspan="4" rowspan="4" So Romantic "It's Today" () "Holiday" rowspan="2" "My Girl" () 2008 "Lovin' Ice Cream" 2011 97 KOR: 88,147Cumulative sales of "Lovin' Ice Cream":
Kwak Tae-hun Project 4 "Love Is Coffee" 2012 55 KOR: 202,827Cumulative sales of "Love Is Coffee":
"Together" — "Happy Brand New Year" 24 KOR: 292,674 Brand New Year "It's Gonna Be Alright" () 2013 19 KOR: 178,871 rowspan="2" "Just Tears" () 2014 97 KOR: 19,252 "Brand New Day" 30 KOR: 100,723 Brand New Year Vol. 3 "A Lonely Christmas" () 2015 97 KOR: 25,151 rowspan="3" "Forever Summer" () 2016 — rowspan="2" "I Wanna Date" () —
Soundtrack appearances Title Year Peak chart positions Sales Album "Torn" 2003 rowspan="4" rowspan="10" Lavender (熏衣草) OST "Do I Have to Be Sorry" () 2005 Sassy Girl Chun-hyang OST "Come On B.B" 2008 Powerful Opponents OST "Lalala...Love Song" Worlds Within OST "Behind You" () 2010 83 The Reputable Family OST "Still In Love" () 2012 — Can Love Become Money? OST "Sadness and Longing" () — Immortal Classic OST "Closer Closer" () — The Thousandth Man OST "Promise" — Kyurem vs. the Sword of Justice OST "Here I Am" 2014 — Tears of Heaven OST "What Should I Do" () 2015 87 KOR: 23,073 The Man in the Mask OST "Happy" () 2016 — Five Enough OST
Awards and nominations Year Awards Category Recipient Result 2000 Mnet Km Music Festival Best R&B Performance "For You Not to Know" ()"2000 MMF part 1" . MAMA. Retrieved 2014-06-25."2000 M.net Korean Music Festival Winners list" . MAMA. Retrieved 2014-06-12. 2001 Mnet Km Music Festival Best Female Group "I'm Fine" ()"2001 MMF part 1" . MAMA. Retrieved 2014-07-23. 2003 Mnet Km Music Festival "Mr.A-Jo""2003 MMF part 1" . Mwave. Retrieved 2014-08-20.
References