Wonder Girls - Tell Me, So Hot, Nobody, 2 Different Tears.
Big Bang - Lies, Haru Haru, Last Farwell, Sunset Glow, Gara Gara GO!!.
2NE1 - FIRE, I Don't Care and Try to Copy Me.
Brown Eyed Girls - Abracadabra, Sign, L.O.V.E
Lee Hyori - U-Go-Girl, Chitty Chitty Bang Bang, I'm Back and many others
Lee Jung Hyun - Suspicious Man, Wa, Bakkwo, Nuh, Dojuhn, Misty, Tell Me, Dahla Dahla ... you know what, just check out all of her albums xD
4minute - Hot Issue, HuH, Invitation, Who's Next feat. BEAST, I My Me Mine
Yup, I love korean girl groups xD