f(x)

f(x) is a four-member (originally five-member) South Korean girl group formed by SM Entertainment active from 2009 to 2016. 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 group was initially composed of 宋茜 (Victoria), 엠버 (Amber/Amber Liu), 루나 (Luna), 설리 (Sulli) and 크리스탈 (Krystal).

Influenced by: Girls' Generation, Super Junior, BoA

Label:

SM Entertainment

Active:

2009-2016

Scene:

Seoul K-pop

Side projects

• Amber Liu solo
• Luna solo
• Krystal solo

• GirlfriendSat, Aug 22
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• MONSTA XSun, Oct 4
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• Julia MinkinFri, Aug 7
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• Frances ForeverTue, Jul 21
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• JJXFri, Jul 10
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• KATSEYEFri, Oct 23
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• @Wed, Nov 4
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• maryjoTue, Jul 28
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