Girls' Generation (Korean: ????, Hanja/Kanji: ????; Sonyeo Sidae, Shojo Jidai) is a nine-member South Korean girl group formed by S.M. Entertainment in 2007. The nine members are: Taeyeon (Leader), Jessica, Sunny, Tiffany, Hyoyeon, Yuri, Sooyoung, Yoona and Seohyun. They are often referred to as SoShi (??, Hanja: ??), or SNSD, the first of which is an abbreviation and the second, mainly used outside Korea, is an acronym of the group's Korean name So Nyuh Shi Dae.
The group has released two Korean full albums, three Korean mini-albums, one Japanese full album and various singles. Their 2009 hit single "Gee" holds the record for being the longest running No.1 song on KBS's Music Bank, having held the No.1 chart ranking for 9 consecutive weeks. Gee was named song of the decade by the Korean music site, Melon.[1] The group also won various awards in 2009 and 2010, including consecutive Artist of the Year (Daesang) awards at the Seoul Music Awards, Golden Disk Awards, Melon Music Awards, and the Korean Cultural Entertainment Awards.
The group began a foray into the Japanese music scene in late 2010 under Nayutawave Records, a part of Universal Music, with the Japanese remakes of their 2009 Korean hits "Tell Me Your Wish (Genie)" and "Gee".[2] 2009 saw the group reach considerable success in Korea after winning the prestigious Disk Daesang (Album of the Year), Seoul Music Awards, and Melon Music Awards respectively.
Got it from [URL="Wikipedia"]http://en.wikipedia.org/wiki/Girls'_Generation[/URL]

f(x) (Korean: ????; pronounced /??f '?ks/) is a five member South Korean girl group formed by SM Entertainment in 2009. The name is a play on the mathematical notation for function, and when input with different 'x', there can be many different outcomes. 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"). The quintet consists of Victoria, Amber, Luna, Sulli and Krystal.

2NE1 (Hangul: ????; RR: tu-aeniwon; pronounced "to anyone"[1] or "twenty-one"[2]) is a South Korean hip-hop/pop girl group formed by YG Entertainment in 2009. 2NE1 consists of four members: Bom, Dara, CL, and Minzy. The group's name 2NE1 stands for "New Evolution of the 21st Century".[3]
They first appeared in "Lollipop", a commercial campaign with Big Bang for LG Telecom, and their debut single "Fire" was released on May 6, 2009. Since then, the group has released two extended plays, 2NE1 and 2NE1 2nd Mini Album, and one studio album, To Anyone.
Fans of 2NE1 call themselves "Blackjacks", a reference to the card game Blackjack.

Super Junior (Korean: ????? Japanese: ????????), often referred to as SJ or SuJu (??), is a popular boy band from South Korea formed by S.M. Entertainment in 2005. The group debuted with 12 members: Leeteuk (Leader), Heechul, Han Geng, Yesung, Kangin, Shindong, Sungmin, Eunhyuk, Donghae, Siwon, Ryeowook, Kibum and later added a 13th member named Kyuhyun; they are one of the largest boy bands in the world. As of 2010, 10 members are active, due to Han Geng's lawsuit with SM Entertainment which led to him leaving the group (now pursuing his own singing career in the Mandarin-Pop entertainment industry), Kangin's temporary leave of absence for mandatory military service and Kibum's pursuit of an acting career.However, the other members have insisted that the three (Kangin, Kibum and Han Geng) are still part of the group, the group also mentioned that they are saddened by Han Geng's departure from the group.
Super Junior has released and contributed in 20 different kinds of records with varying degrees of success.Over the years, they have been divided into smaller sub groups, simultaneously targeting different music industries and audiences. Largely due to Super Junior's success as entertainers, other Korean entertainment managements began to train their music groups in other areas of entertainment, such as acting and hosting.[4] In addition to their commercial success, Super Junior has earned seven music awards from the M.net Asian Music Awards, eleven from the Golden Disk Awards, and is the second singing group to win Favorite Artist Korea at the 2008 MTV Asia Awards after JTL in 2003.

i2PM is a South Korean boy band, originally a seven-member group, but currently consisting of six members[1] due to the sudden contract termination of leader Jaebeom following an Internet controversy in September 2009. They are managed by JYP Entertainment. The current members are Junsu, Junho, Nichkhun, Taecyeon, Wooyoung and Chansung.
2PM is one of the two subgroups branched out from the eleven-member (before Jaebeom's departure) boy band One Day, the other being 2AM. They debuted with the song "10 Jeom Manjeome 10 Jeom" (10? ??? 10?, lit. 10 Points Out of 10 Points), which showcased their acrobatic dance styles.[2] They achieved their first No. 1 song with "Again & Again".

2AM is a South Korean four-member ballad boy band under JYP Entertainment. The members are Jinwoon, Jo Kwon, Seulong, and Changmin. 2AM is one of the two subgroups branched out from the eleven-member (before Jaebeom's departure) boy band One Day, the other being 2PM. They officially debuted on July 11, 2008 on KBS's Music Bank, performing their debut song "This Song". They won their first Mutizen at Inkigayo on February 7, 2010 with "Can't Let You Go Even If I Die".

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