[Secret] leader, lead vocals.
5-Member female group Oh girls.
2005 Mnet ' Let's make up to win the ' battle CokePLAY myth face programs.
In 2007, starred in the MTV ' diary of Oh girl '.
In 2007, Choi, Ms. support, YUI, yubin, prepare a group o girl debut with, but was canceled.
2009-My sister-up bling EP Vol.1 ' Boo ' song.