my list
my top 3 consists of a.y.u XD
1.ayumi hamasaki
2.yui
3.utada hikaru
4.koda kumi
5. the brilliant green
6.ami suzuki
7.Sheryl Nome starring May'n
8 Ranka Lee = Nakajima Megumi
9.FLOW
10.boa
11.mika nakashima
12.mai kuraki
13.hitomi
14.hitomi shimatani
15.arashi
16.aiko
17.Hins Zhang
18.Joey Yong
19.Maaya Sakamoto
20.stephaine