AFter school 애프터스쿨

After School (애프터스쿨) is a South Korean girl group. They are managed by Pledis Entertainment, the same management company that manages singer Son Dam-bi. After School debuted on January 17, 2009 with their first dance song, "Ah."Park Ga-hee, After School's leader, has been seen as a back-up dancer for artists under both SM Entertainment and YG Entertainment, most notably for BoA. Park was also part of a Korean American girl group called S.Blush, whose first digital single peaked at #2 at the Billboard Hot Dance Chart. In 2008, Park was featured in Son Dam-bi's "Bad Boy" music video as a rapper, and Kim Jung-ah was featured in Son's performances as a back-up dancer. Lee Ju-yeon was featured in Son's "Crazy" performances.

Days before After School's debut, Pledis Entertainment officially announced that the group's music concept is heavily influenced by the Pussycat Dolls, and that they "will be a type of group that Korea has never seen before."^[1] On January 15, 2009, Sony BMG released a 30-second teaser video to the web, reaching 10 million views on the first day.^[2] The girls, as a group, made an unofficial first appearance on December 29, 2008 at the SBS Song Festival 'S', performing "Play Girl" with Son Dam-bi.

After School's debut single was released as a digital single on January 15, 2009, and they made their debut performance on January 17, 2009 on MBC's music program, Music Core.

YIWEI: Park Ga Hee ..do u know who is she? argh. perhaps u dun know. Park Ga Hee the ex girlfriend of yoochun who is 6 yrs older than micky, and now she debut to become a star, a singer, a band, a celebrity. Gosh. She is already 29 yrs old. i thought that she has married ? emm...many question marks in my brain??!??!??

Well..i think After School will be quite famous in the future..As they hav given their promise.And especially Gahee..Many ppl especially Cassiopeia have been paying so much attention on her eventhough before she debuted. And now...Emm..I think she is pretty and talented.Keep it up,Ga hee unnie.

Here is the link of After School AH! mv:

http://www.youtube.com/watch?v=u04F4lDWxmQ