Top 5 Korean Band

1. Super Junior
Super Junior is a popular South Korean idol group. Formed in 2005 by SM Entertainment the group comprised a total of thirteen members at its peak. Super Junior launched into international recognition following the release of their best-selling single "Sorry, Sorry" in 2009, the title song of their most critically successful album Sorry, Sorry. The group has released and contributed to over 20 records with varying degrees of success, and was the best-selling K-pop artist for three years in a row

2. Girls Generation
Girls' Generation is a nine-member South Korean pop girl group formed by S.M. Entertainment in 2007. They are known in Japan as Shoujo Jidai and are referred to as SoShi or SNSD by their fans, both abbreviated forms of the group's Korean name. They sold over 100,000 copies for each of their six Korean releases, making them the first female group in the South Korean music industry to do so in over six years.

3. Big Bang
Big Bang is a South Korean male band under the management of YG Entertainment. Formed in 2006, Big Bang has grown to become one of the most successful Asian acts in the world. The group consists of 5 members. Big Bang is known for their unique urban-originated music and fashion style. The members' involvement in composing and producing their own music, most notably G-Dragon's, has earned the group respect and praise from music industry experts.
The group's turning point came with their hit song Lies, which stayed at number one on Korean charts for a record-breaking seven consecutive weeks. From 2007 to 2008, Big Bang received many awards, including "Best Male Group", "Song of the Year", "Artist of the Year", and the Grand Award at the Seoul Music Awards.

4. 2NE1
2NE1 is a four-member South Korean girl group formed by YG Entertainment in 2009. The band consists of 4 members. The name 2NE1 combines the phrases "21st century" and "new evolution^". First appearing in "Lollipop", a commercial campaign with Big Bang, 2NE1's debut single "Fire" was released on May 6, 2009.

5. 4Minute

4Minute is a five-member South Korean girl group formed in 2009 by Cube Entertainment.The girls released their first single on June 15, 2009 and made their first debut stage in June 18, 2009. The group received the Bonsang Award at the 20th Seoul Music Awards on January 20, 2011. And on February 6, 2011, the group attended the 2010 Billboard Japan Music Awards wherein they received the "Kpop New Artist Award".