er.
Nami Tamaki ~ hell, i started listening even since gundam seed aired.
Ayu
Koda kumi
Stephaine -w00t
YUI
Utada Hikaru
BoA ~ i think i got abit outdated after the face though 
Hitomi Shimatani
akb48
Jonte XD
High and Mighty Colour
Do as infinity
i know i've listened to all cause they are all in my library XD but if u play me one of them, i'll never remember the name of it
that's about all...
i intend to download singer's whole discography if i like them
