f(x) Korea
Biography
f(x) is a four 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 "??? (LA chA TA)". The quartet consists of ???? (Victoria), ?? (Amber), ?? (Luna), and ???? (Krystal). Krystal was first spotted by SM Entertainment in 2000
