Debut date: June 7, 2007, MCD debuted.
Company: F & ampc Music
(It is the same company as SG Wanna, SeeYa, Lee Hyo Ri).
Debut date: May 25th, 2008, pop songs debuted.
Company: SM (Star Museum Entertainment)
(It is the same company as TVXQ!! Bao Er, Lee Dong Hae, Myth Band, girlhood, etc. )