On Prism Records
Otaku Record
Omoinotake
OMOCHI SOUND FACTORY
ONSEN PROJECT
PANDORA
Poppin'Party
Pastel＊Palettes
PENGUIN RESEARCH
POST MODERN TEAM
PKCZ(R)
浦島坂田船
Polkadot Stingray
Precious Jazz Orchestra
Pinokiti Records
PPP
