I did a boygroup one once. Today the list will only contain out of soloists or band/group-member who released solo music. How many of them do you know?
- $HOR1 WINBOY
- 4s4ki
- Ado
- Aile The Shota
- Aimer
- Aimyon
- Aisha
- Akira Takano
- Akkogorilla
- AKLO
- Awich
- AYA a.k.a PANDA
- Ayumi Hamasaki
- Chanmina
- Claquepot
- CrazyBoy
- Daichi Miura
- Daoko
- Dean Fujioka
- Dori Sakurada
- Dream Ami
- eill
- Elle Teresa
- EXILE SHOKICHI
- EXILE TAKAHIRO
- HICO
- HIRAIDAI
- Hitomin
- iri
- Jinmenusagi
- JP THE WAVY
- KAHOH
- Kaita Tachibana
- Kalen Anzai
- Ken Hirai
- Kenshi Yonezu
- KEN THE 390
- Koda Kumi
- Kyary Pamyu Pamyu
- LiSA
- Masayuki Suzuki
- Milet
- Misako Uno
- Miyavi
- Motoki Ohmori
- Namie Amuro
- Nissy
- Noa
- Novel Core
- ØMI
- Reiji Kawaguchi
- REOL
- Riri
- Rude-α
- Rung Hyang
- Ryuji Imaichi
- SALU
- Sanari
- Sasuke
- Sayaka Yamamoto
- SG
- Shachi
- Shinjiro Atae
- Shuta Sueyoshi
- SIRUP
- SKY-HI
- Sweet William
- Taeko
- Taichi Mukai
- Takanori Iwata
- THE CHARM PARK
- Thelma Aoyama
- Vickeblanka
- Yama
- Yuuri