I've never listened to her music, but she seems to be very popular. There was a special on MTV here, but I missed it. It said that she's going to try and make it in the US music business.
I haven't heard many of her songs, but some I really like and a few I really dislike, but mostly for the background music. I've only heard Japanese songs so I can't really comment on her english songs, but I think she could do pretty well. If you haven't listened to any of her songs I would recommend it, she has a very nice voice IMO.
Amazing voice. She has her new US album out right now (not good IMO)
Listen to her more popular japanese hits.
Xio, you don't like Exodus? Why not? I love it!