All in alphabetical order:
Japanese:
access
Akiko Shikata
Akino Arai
ALI PROJECT
Anna Tsuchiya
anNina
ave;new
Aya Hirano
Ayumi Hamasaki
Baisho Chieko
Beat Crusaders
BUCK-TICK
Chihara Minori
dai (Composer)
Daisuke Asakura
DALI
Do As Infinity
Eiko Shimamiya
FictionJunction
FLOW
Hasegawa Tomoki (Composer)
Hashimoto Miyuki
Hitomi Kuroishi
Itou Kanako
Jimang
Jinn
Kaori Fukuhara
Kariudo
Kawai Kenji (Composer)
Koda Kumi
Kotani Kinya
Mamiko Noto
Maximum The Hormone
May'/n
Megumi Nakajima
Minami Kuribayashi
Morning Musume
Nakagawa Koutarou (Composer)
Nakashima Mika
Nightmare
Noriko Hidaka
Olivia Lufkin
Ootsuki Kenji
Orange Range
r.o.r/s
Rekka Katakiri
Rie Tanaka
Saeko Chiba
Sagisu Shiro (Composer)
Sakai Mikio
See-Saw
Shinohara Emi
Sound Horizon
Suga Shikao
SunSet Swish
Suzuki Ami
T.M.Revolution
Tamaki Nami
Tamura Yukari
Tatsuya Ishii
Tomizawa Michie
Tommy February6
Utada Hikaru
Vivian or Kazuma
Yuka
YUKANA
Yuko Goto
YURIA
Yuzuki
Zetsubou Shoujotachi
Korean:
BoA
DBSK
Kara
sugar
Chinese:
Jolin Tsai
Thai:
Mike & Golf
waii
English:
ABBA
Alicia Keys
All Saints
The Buggles
Daft Punk
Enya
Franz Ferdinand
George Michael
Gwen Stefani
Janet Jackson
John Lennon
Kelly Clarkson
Kelly Rowland
Kylie Minogue
Lady GaGa
Lily Allen
Madonna
Mariah Carey
Melanie C
Michael Jackson
No Doubt
P!nk
Prince
Right Saied Fred
Sean Paul
Vanessa-Mae (British Asian)
Romanian: (more rarely)
Akcent
Ana Maria
DJ Project
Hi-Q
Holograf
note: this is ALL I have in computer
There are some that I listen ocasionally and others excessively
And at the moment I'm obsessed with:
Ayumi Hamasaki, Koda Kumi, Tamura Yukari, Akiko Shikata, Shimamiya Eiko, Hitomi Kuroishi, Lily Allen, dai, Enya
and that's it for the moment ^^