J-pop/rock Wallpapers

I have no problem finding Ayu wallpapers, but I can't seem to find wallpapers of any other artist. I'd especially like ones where it's just a scan of the cover of a single/album or whatever.

I'd like some wallpapers of BoA, Yaida Hitomi, Utada Hikaru, Van Tomiko (Do As Infinity), Kaori Mochida (Every Little Thing), etc...

If anyone can help, I'd be much appreciative!