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South Korea (2009 – present)

f(x) (Korean: 에프엑스) is a five member South Korean girl group formed by SM Entertainment in 2009. The name is a play on the mathematical notation for function, with “f” signifying “flower” and “x” representing the female’s double X chromosome. The group made their debut on September 1, 2009 with release of a digital single 라차타 (LA chA TA). The quintet consists of 빅토리아 (Victoria), 엠버 (Amber), 루나 (Luna), 설리 (Sulli) and 크리스탈 (Krystal).

Krystal Jung was first spotted by SM Entertainment in 2000, which earned her a small role in a short segment of Shinhwa’s “Wedding March” music video. Sulli Choi first debuted as a child actress in 2005 when she was selected to play young Princess Sun-hwa in the SBS television drama, The Ballad of Seo-dong. In 2006, SM Entertainment recruited Luna after seeing her performing on SBS’s television program, “Truth Game”. In September 2007, SM Entertainment recruited Victoria Song. A month later, Amber was cast from an audition in Los Angeles, California.

SM first released a teaser preview of the group via YouTube on August 24, introducing them as “Asia’s Pop Dance Group.” For five days, SM individually released information through news portals and posted pictures of each member on SM Town’s official website, starting with Korean member Sulli on August 26, Taiwanese-American member Amber on August 27, Korean-American member Krystal on August 28, Korean member Luna on August 29, and lastly the Chinese member Victoria on August 30.


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  • poueranger

    afffffffffffffffff quando a desgraçada da sulli volta a vagaba da vic quer me sair do grupo, quero morrer

    52 minutes ago Reply
  • wtfhakyeon

    amostra o f(5)

    12 hours ago Reply
  • Lightning2104

    Now rumours of Vic wanting to leave :( plz I just want one more comeback before they self destruct.

    Yesterday 8:43am Reply
  • Lorran_M


    Yesterday 6:13am Reply
  • SkyDreamer101

    Krystal is my bias here, since she's the only Jung sis still in music :x

    Yesterday 9:49pm Reply
  • pblflp

    rainhas ♥

    Yesterday 3:39pm Reply
  • onvx

    Please never stop making music, I've already reserved space for another 5 albums and a world tour in my life.

    26 May 8:05pm Reply
  • rhorewyn

    need new f(x) in my life now.

    26 May 4:44am Reply
  • zola5ds

    eu dou pra luna quando ela quiser

    25 May 12:01am Reply
  • Jhonny_LC

    Sulli voltou?

    24 May 10:01pm Reply
  • onvx

    f(x) are one of the best groups in kpop, how you can bash them for any reason is laughable.

    24 May 4:40pm Reply
  • amandagrego

    aaaaaaaanyway, luna confirmed the next comeback will be f(5), this is the start of sullisus ha rising from the dead! [7]

    22 May 2:16am Reply
  • mitsudesuyo

    she will always be my babyssul ;;

    20 May 6:33pm Reply
  • saltjungzz

    aaaaaaaanyway, luna confirmed the next comeback will be f(5), this is the start of sullisus ha rising from the dead! [6]

    20 May 6:32pm Reply
  • nueyl

    v goodbye baby ssul.. welcome woman ssul

    20 May 1:08pm Reply
  • mitsudesuyo

    me mata de me foder

    20 May 5:56am Reply
  • keshazrose


    18 May 3:58pm Reply
  • EchoSolo

    Since 2013 SM's albums are getting better with each release (before were just main single with fillers songs). But nothing can touch Pink Tape or Red light! Those 2 albums are better that all the discography of other groups.

    17 May 5:04pm Reply
  • milkythighs

    aaaaaaaanyway, luna confirmed the next comeback will be f(5), this is the start of sullisus ha rising from the dead! [5]

    17 May 10:16am Reply
  • jakobdorof

    i think all five members of f(x) are great and want to see them all continue but as long as their music's this good idc if they're five people or three planks of wood or what the fuck ever

    16 May 5:18pm Reply
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