kpop

Sistar (씨스타, also stylized as SI★, SiSTAR) is a four-member girl group from Seoul, South Korea, under the management of Starship Entertainment.The four members are: Bora / 윤보라, Soyou / 강지현, Hyorin / 김효정 and Dasom / 김다솜. Their group name is a combination of the words "Sister" and "Star", meaning they are meant to be sisters in the entertainment business and become big stars. SiSTAR made their first appearance through a Céci magazine photo in England shoot on March 19, 2010 for the clothing company FUBU.

소녀시대 / 少女時代 / SNSD / So Nyuh Shi Dae (Girls' Generation), is a nine member girl group from South Korea formed in 2007 by SM 엔터테인먼트. The group debuted on SBS Inkigayo on August 5, 2007, performing their first single, 다시 만난 세계 (Into the new world). The members are (in order of official announcement): 윤아 (Yoona), 티파니 (Tiffany), 유리 (Yuri), 효연 (Hyoyeon), 수영 (Sooyoung), 서현 (Seohyun), 태연 (Taeyeon), 제시카 (Jessica) and 써니 (Sunny).

BEAST (in Korean: 비스트, stylized as B2ST) is a six-member boy band from South Korea, under Cube Entertainment. The group was originally known as B2ST, an acronym for Boys to Search for Top. However, their name was changed to BEAST (Boys of the East Standing Tall) a few days before debut. They released their first mini-album Beast Is the B2ST on October 14, 2009. There were many news articles on the group before its debut as many of them had previous experience in the entertainment industry.

There are, at least, three bands known as 2AM. 1) 2AM is a South Korean four-member ballad boy band under JYP Entertainment. The members are Jung Jinwoon , Jo Kwon, Im Seulong, and Lee 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".