Japanese music suggestions!? :D?

Question:

My favorite artist is Ayaka. I LOVE her. :)

But I want to find more artists that I like!! Any suggestions?

Answer:

Namie Amuro is amazing, she's done some music for InuYasha soundtrack.
Ritsuko Okazaki did some music for Fruits Basket.

As for bands, Stereopony is by far one of my favorites. They've done some music for Bleach.
Supercell is just as fabulous.
Aqua Timez is also very good.

Last for best, Kanon Wakeshima has to be my all time favorite. I first found her through Vampire Knight :)

Hope I helped!