um.. Maybe try some..
Lee soo young
Faye wong
Jay Chou (he's pretty much known as a Rnb artist, but not all his songs are like that. He's got a unique style so maybe just check out his songs just in case ya like 'em

like maybe 'Fine Day', 'Her eyelashes', 'You can hear it', or 'Qi Li Xiang'
Baby VOX
Namie Amuro
DAI
alot of people like
ELT.. i'm not one of them, but they are popular
um.. Lol
Jolin Tsai has some songs which aren't bad if you like pop.
um.. all I can think of at the minute.. might add some more later