J-POP 「お」からはじまる 人物
- organic stereo
- organs cafe
- ORGASM GRIND DISRUPTION
- ORHA
- Ori-ska
- ORICA
- Orient-Vesper
- ORIENTA
- Oriental Magnetic Yellow
- Oriental New Edge
- ORIENTAL SPACE
- ORIGAMI Ent. × AirHead
- origami PRODUCTIONS
- Original flava
- ORIGINAL KOSE
- ORIGINAL SOUL CREW
- ORIGINAL WORD
- Orihusay
- ORINOVIVO
- ORION
- ORIONBEATS
- ORITO
- orivia
- ORLAND
- orochi a.k.a DARKNESS THE MC
- orochi aka DARKNESS THE MC
- Orquesta Libre + ROLLY
- Orquesta Nudge!Nudge!
- Ortance
- ORβIT
- Os Catalepticos
- osage
- OSAKA BB WAVE
- OSAKA ROOTS
- OSAKAままん
- Osaka翔Gangs
- Osaka翔Gangs
- OSAMU SATO
- OSAMURAISAN
- oscilloscope.
- OSRUM
- ossi*
- OSTER project feat.初音ミク
- OSTER “BIG BAND” project
- ostooandell
- OSUMI
- OS☆U
- OS☆U5
- OTADEHAN
- Otis YOSHI
- oto
- OTO-DAMA
- OTOGI
- otoiro
- otoiro
- otoji
- Otokaze
- OTOMOTO
- otori
- OTOUTA
- Otto
- Otus
- OuriK
- OVALL
- Ovall
- ovEnola
- OVER ACTION
- OVER ALL 7
- OVER ARM THROW
- OVER ARM THROW
- OVER DOSE
- OVER DRIVE
- OVER HEAD KICK GIRL
- OVER HEAD KING
- OVER LIMIT
- Over Limit Emblem
- Over Rocket
- Over The Top
- OVERCOAT'S
- Overground Acoustic Underground
- OVERHANG PARTY
- overleaf
- Overstans
- OverTheDogs
- OverTone
- OVERWHELM from A応P
- OVUM
- OWEAK
- OWL BEATS × JP aka chillwired
- owls
- OWNERS
- owtn.
- OWV
- Oxalis
- OxT
- OXYMORPHONN
- OYAJI組
- OYAMA × NITTA
- OYG
- OYSTER