Changed up my list a bit now too

1.) Utada Hikaru
2.) Ayumi Hamasaki
3.) Ai Otsuka
4.) Koda Kumi
5.) Mika Nakashima

OTHER MENTIONS
Leah Dizon
Yuna Ito
Perfume
Aira Mitsuki
MiChi
Tohoshinki
alan

Mine...
 

Mine would have to be...

One|Lia
Two|Ayumi Hamasaki
Three|KOTOKO
Four|capsule
Five|m.o.v.e

1. alan (dun dun dun)
2. Utada Hikaru (I'm waiting for her to kick alan out and claim her spot back but her work is so amazing she's still in top 2)
3. BoA (Surprise! I'm starting to love a lot of her songs! I wouldve never known that her music was so good from her English album)
4. Ayumi Hamasaki (waiting for Ayu to break top 2 again :()
5. Koda Kumi (more ballads please)

1. Utada Hikaru (Of Course)
2. Perfume
3. Kanon Wakeshima
4. Yousei Teikoku
5. capsule

koda kumi
2ne1
lee hyori
tvxq
2pm

2ne1 has invaded my music library!

1. Utada Hikaru
2. Ayumi Hamasaki
3. Namie Amuro
4. Koda Kumi
5. Gackt

non Johnny's wise

1) Saito Kazuyoshi (THANK YOU THANK YOU THANK YOU RYO NISHIKIDO for name dropping Saito's name during HEYx3 :heart :heart . I really am addicted to Saito's music right now)

2) Suga Shikao (I want to hear his renditions of KAT-TUN's Real Face & ARASHI's Aozora no Pedal since he wrote both songs & even composed Aozora no Pedal :heart)

3) Fukuyama Masaharu

4) ON / OFF

5) flumpool

KUMI KUU :heart
AYU :heart
2NE1
BoA
misono (wtf O.o)

1. Koda Kumi
2. Hamasaki Ayumi
3. CHISA (GND)
4. alan
5. Tsuchiya Anna/YUI/Nishino Kana

(GOD! It's a three-way tie! >.<)

Honorable Mentioned:
Leah Dizon
Gackt
misono
ON/OFF
Amuro Namie
BoA
AAA

1. alan
2. Utada hikaru
3. BoA
4. Perfume (DUN DUN DUN)
5. Ayumi Hamasaki
~~~~~~~~~~~~~~
6. Koda Kumi

AHH..headache~

1. KinKi Kids
1. L'Arc~en~Ciel
1. Ayumi Hamasaki
4. Ken Hirai
5. Utada Hikaru

still have NEWS, Arashi, S.H.E, Grasshopper and many many!!! :doh

woah i didn't know that alan is your number one! :luv2 i thought hikki would be #1 XD

1. Ayumi Hamasaki
2. YUI
3. Kanon Wakeshima
4. Perfume
5. not sure.. guess I'll just put Yuna Ito

Hikki should be #1 :no I wish she would release soon. alan is more interesting atm. New list:

1. alan
2. Utada Hikaru
3. Perfume
4. Ayumi Hamasaki
5. BoA
~~~~~~~~~
6. Koda Kumi

right now for me, in no order...

1. Ayu
2. Kuu
3. Hata Motohiro
4. Ai Otsuka
5. none actually... maybe I need new singers or something. XD

ditto :innocent

for me I have to spilt it into 5 groups since I listened to SO many acts . It's boring to just listen to less than 10 & let alone 5 jpop acts :innocent

Non Rock Bands

1) ON/OFF
2) Aqua Timez
3) school food punishment
4) GIRL NEXT DOOR
5) Kobukuro

Rock Bands

1) UVERworld
2) BREAKERZ :heart
3) flumpool :heart
4) abingdon boys school
5) GLAY

Female Solos

1) Kuroki Meisa (woot woot , SHOCK -Unmei-'s solid !)
2) ayumi
3) Koda
4) YUI
5) Kanon Wakeshima

Male Solos

1) Saito Kazuyoshi
2) Suga Shikao
3) Fukuyama Masharu
4) Matsushita Yuya
5) Yusuke

Johnny's Bands

1) KAT-TUN :heart
2) ARASHI
3) Tegomass
4) NEWS
5) Kanjani∞

Johnny's Solos

1) Domoto Koichi (I'm madly addicted to Ayakashi at the mo :luv2 :luv2)
2) Tsuyoshi
3) Takizawa Hideaki (come back soon with Tsubasa please :weep)

1. Ayumi Hamasaki
2. Koda Kumi
3. Tohoshinki
4. Namie Amuro
5. Arashi

:)

I've had a sudden change...

1. Ayumi Hamasaki (1st time on the top of my list. Dont really know why this happened suddenly)
2. Perfume
3. alan
4. Utada Hikaru (slipping away now...)
5. Koda Kumi (BoA goes byebye)
~~~~~~~~~~~
6. BoA