Description: f(x) was a five member South Korean girl group formed by SM Entertainment in 2009. The name is a play on the mathematical notation for function. The f stands for flower and the x represents the female's double x chromosome.f(x) strives to be the kind of girl group that can change and adapt to many situations. The group members have also been nicknamed "function girls". The group made their debut on September 1, 2009 with release of a digital single "La Cha Ta" (stylized as "LA chA TA"). Members: [Link removed - login to see] - Leader, Main Dancer [Link removed - login to see] - Main Rapper, Sub f(x) was a five member South Korean girl group formed by SM Entertainment in 2009. The name is a play on the mathematical notation for function. The f stands for flower and the x represents the female's double x chromosome.f(x) strives to be the kind of girl group that can change and adapt to many situations. The group members have also been nicknamed "function girls". The group made their debut on September 1, 2009 with release of a digital single "La Cha Ta" (stylized as "LA chA TA").
Members:
[Link removed - login to see] - Leader, Main Dancer
[Link removed - login to see] - Main Rapper, Sub-Vocalist
[Link removed - login to see] - Main Vocalist, Lead Dancer
[Link removed - login to see] - Lead Vocalist, Face of The Group, Center, Visual, Maknae

Former Member:
[Link removed - login to see] - Sub-Vocalist, Lead Rapper, Visual, Face of The Group

Nu ABO is the first extended play by South Korean girl group f(x). It was released May 4, 2010 in South Korea. The first promotional performance was made on May 7 on Music Bank.
The title track "Nu ABO" is a play on words meaning "New Blood Type": A, B and O are blood types, and if the letters are said in succession, it sounds like "ye-bbi-oh". The title is supposed to represent the fact that f(x) is a new group bringing their new talents, implying that they are the "new blood" to the music industry.
Pinocchio is the first studio album and third overall physical release by South Korean girl group f(x), released on April 20, 2011 by SM Entertainment in South Korea.
The album was re-released as Hot Summer on June 14, 2011 and contain the title track "Hot Summer" as well as their first two singles from their debut materials "La Cha Ta" and "Chu~".
The track "Lollipop" is a Korean rendition of the song with the same title, with a feature of the boy group SHINee. The track "Hot Summer" is a Korean cover of the song with the same title, originally released by the German girl group Monrose.
Electric Shock is the second EP by South Korean girl group f(x), released digitally on June 10, 2012, and released physically on June 13, 2012, under the label of SM Entertainment. The album's title track is "Electric Shock".
The title track "Electric Shock" is an energetic and rhythmical electronic-dance song. The song compares confused but exciting feelings after falling in love to an electric shock and the lyric expresses this feeling interestingly by starting each line of the word, ‘Jeongichunggyeok (“Electric Shock” in English)’ to make it even more interesting. Composed by SM's female songwriter Kenzie, the track "Jet" is a lively track with hip-hop rhythms and electronic dance, in which Amber was directly involved with the writing of the lyrics of the rap. Composer Hitchhicker also brought a track called "Zig Zag", which is about escaping the reality and traveling to another world, and the track "Beautiful Stranger" features Amber, Luna and Krystal mature singing and performance with a urban and hip-hop feel and composed as a dance-pop and electropop song, story of a girl who communicates with strangers not with the closed attitude but with the open mind and explores the unknown world. The other two tracks include "Love Hate", a bubblegum pop song which the lyric wittily depicted the prelude to the intense love where the couple wanders between love and hate, and "Let’s Try" which draws influences from reggae, making it a total of 6 tracks to be included in the mini-album. ... (more)