Kpop Wiki

f(x) (에프엑스) is a four-member girl group under SM Entertainment. They officially debuted as five members on September 5, 2009 with the digital single "La Cha Ta".

The group received the title of "Asian Pop Dance Group" by their label and are touted as a multinational group since f(x) consists of members from China, United States and South Korea.


2016–2019; 2021: Inactivity and departures from SM

The group largely went inactive since 2016 with no news of new releases as the members pursued individual activities.

The group (without Victoria) performed together for the first time in three years at the SMTOWN Live 2019 In Tokyo concert in August 2019.[1]

On September 1, 2019, Amber announced via her social media accounts that she had not renewed her contract with SM Entertainment.[2]

On the day of the group's 10 year anniversary, September 5, SM Entertainment shared that both Luna and Victoria have chosen not to renew their contracts with SM,[3] while Krystal still has time remaining before her contract expires.[4]

On April 23, 2021, during a review video of her activities from debut to present, Luna expressed confusion over f(x) being referred to in the past tense, stating that the group had not yet disbanded.[5]


Name Position(s) Year(s) active
Victoria (빅토리아) Leader, Main Dancer, Vocalist, Rapper 2009–2019
Amber (엠버) Main Rapper, Vocalist 2009–2019
Luna (루나) Main Vocalist, Lead Dancer 2009–2019
Sulli (설리) Lead Rapper, Vocalist, Visual 2009–2015
Krystal (크리스탈) Lead Vocalist, Visual, Maknae 2009–2019



Studio albums

Mini albums


Digital singles

Promotional singles


  • "Invincible Lee Pyung Kang OST Part 3" (2009)
  • "Thrill Love" (2010)
  • "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)



Digital singles


Concert tours



Official links