Some of my favourites are:
BoA
Wonder Girls
Halcali
Koda Kumi
Ayumi Hamasaki (Just remembered
lol. Curse my terrible memory!!)
Agghh I can't list them all off the top of my head, they're right on the tip of my tongue.
Reason I can't remember them is that normally I listen to jap/kor/chinese rock and techno as well, but overall, I'm a death metal fan
