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f(x)

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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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  • Ju1i3t4

    So excited about seeing them in London next weekend! But will they be f(4) or f(5)?

    13 minutes ago Reply
  • prisiaquinha

    ja podem tirar a sulli da main, preguiçosa do kpop

    Yesterday 12:18am Reply
  • atiqah02

    i'm not even a sulli stan but i hope this hiatus she's taking isn't one forced on her by SM

    Yesterday 4:04pm Reply
  • xiumins

    descansem em paz

    Yesterday 5:42am Reply
  • Wotamin

    v bless

    30 Jul 12:16pm Reply
  • happeniss

    "f(x) are consistently preparing for their new album which will be released this year"

    29 Jul 8:52pm Reply
  • megyeon

    Mostra o comeback

    29 Jul 6:05pm Reply
  • mitsudesuyo

    a única coisa que está out é a ke$ha more

    27 Jul 3:06pm Reply
  • Gabrello

    I still have hopes that Sulli will stay with the other girls... ):

    26 Jul 10:22pm Reply
  • poueranger

    Exciting for the comeback, only the bests and the pretty ladies (a handsome tomboy included). Sulli OUT = yay!!

    26 Jul 2:55pm Reply
  • amandagrego

    "I'm curious how their upcoming comeback will be like :(( I can't imagine it without sulli" me too :/

    24 Jul 9:09pm Reply
  • amandagrego

    i'm more worried about the group disbanding [12]

    24 Jul 9:08pm Reply
  • bukietchmur

    I'm curious how their upcoming comeback will be like :(( I can't imagine it without sulli

    24 Jul 5:55pm Reply
  • gabbs_r

    @Lifunia I'm using SUMMER SPECIAL Pinocchio / Hot Summer like the cover, but I'm not sure

    23 Jul 11:02pm Reply
  • Wotamin

    wow that japanese release is such a nonevent

    23 Jul 8:17pm Reply
  • Lifunia

    What's the correct song and album tag/s for their japanese release?

    23 Jul 11:53am Reply
  • ChAelitaNicole

    Pinocchio (Japanese Version) <3

    22 Jul 9:38pm Reply
  • ronybozoglian

    vem comeback

    22 Jul 8:51pm Reply
  • mitsudesuyo

    the thirst for information is just killing me SM i hate you so fucking much LET ME KNOW WHAT IS GOING ON UGHHHHHHHHH

    22 Jul 8:23am Reply
  • mitsudesuyo

    miss my jungli so much :(

    22 Jul 8:22am Reply
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