F(x)

f(x) (에프엑스) is a four-member girl group created by SM Entertainment in 2009.

History
f(x) was first introduced as a five-member dance-focused pop group in a teaser clip released on August 24, 2009. Their debut single "LA chA TA" was released on September 1, with a showcase held the following day at Samseong Fashion Center in Gangnam. The group's broadcast debut was on September 5, on MBC's Music Core. Shortly after their debut, f(x) featured in promotions of the LG Chocolate cell phone alongside Girls' Generation. Both groups released versions of the song "Chocolate Love"; f(x)'s being an electropop version released on October 8.

Members

 * Victoria
 * Amber
 * Luna
 * Krystal

Ex-Members

 * Sulli

Studio albums

 * Pinocchio (2011)
 * Hot Summer (Repackage) (2011)
 * Pink Tape (2013)
 * Red Light (2014)
 * 4 Walls (2015)

Mini albums

 * Nu ABO (2010)
 * Electric Shock (2012)

Singles

 * "Chu~♡" (2009)

Digital singles

 * "La Cha Ta" (2009)
 * "Chocolate Love" (2010)
 * "Thrill Love" (2010)
 * "12/25 (Wish List)" (2015)
 * "All Mine" (2016)

OSTs

 * "Invincible Lee Pyung Kang OST Part 3" (2009)
 * "Master of Study OST Part 2" (2010)
 * "More Charming By The Day OST Part.1" (2010)
 * "Juloring Animal Detectives OST"
 * "Paradise Ranch OST Part.1" (2011)
 * "Puzzle Bubble Online OST" (2011)

Singles

 * "Summer Special Pinocchio / Hot Summer" (2015)
 * "4 Walls/Cowboy" (2016)

Digital singles

 * "Hot Summer" (2012)