I am completely and totally addicted to JPOP. Well, really, I'm kind of just addicted to music in general, regardless of language or country of origin (as indicated by my love of Eurovision). American music, however, went through a phase (which I'm not sure has ended) where it was just too angry or depressed for me... so I listened to a lot of Japanese stuff instead. If they're angry, I don't know about it... and they certainly sound upbeat!
My extensive collection of Japanese CDs aside, however, JPOP does suffer from an over-abundance of high-pitched, thin, nasal voices. Rich, full voices -- and altos -- are rare. Hikaru Utada has been a favorite for years at least in part because her voice is powerful, not reedy.
So when I get a new favorite -- someone who breaks the traditional mold -- I like to share.
Currently, I have two new loves -- one a group, one a solo act -- who are all over my play list.
First is Ri-Sa.J. It's a group of three female singers, who I found by trying to discover if Tifa can sing. (Her Japanese voice actress shares the romanization of her name with one of them.) Here is a clip (the bulk of the song, actually) of their single, 'Why U...'
The second is singer Beni. I linked a video on my facebook page months ago, but I've recently found two more songs by her that I just adore. Here's one of them, 'Yura Yura': (Others faves are 'Koi Kogarete' and 'Gimme Gimme'.)