Psychedelic

Oneida

Indie Rock · Indie

Oneman

DubStep · Electronic

Oneohtrix Point Never

Electronic · Ambient

OOOD

Trance · Psychedelic

Oranssi Pazuzu

Experimental · Black metal

Orchid Star

Ambient · Chillout

Orval Carlos Sibelius

Rock · Ambient

Os Mutantes

Rock · Experimental

Ott

Electronic · Ambient

Over The Hill

Rock · Alternative

Overlap

Electronic · Psychedelic

Ozric Tentacles

Progressive rock · Instrumental

Panda Bear

Folk · Indie

Parasense

Psychedelic · Psytrance

Peaking Lights

Ambient · Psychedelic

Pink Fairies

Classic rock · Hard Rock

Pink Mountaintops

Folk · Indie Rock

Poisoned Electrick Head

Progressive rock · Psychedelic

Pond

Indie Rock · Indie

Porcupine Tree

Rock · Progressive rock

Primevil

Hard Rock · Psychedelic

Procol Harum

Rock · Classic rock

Prometheus

Electronic · Psychedelic

Psychaos

Psychedelic · Psytrance

Psychemagik

Experimental · Psychedelic

Purson

Rock · Hard Rock

Quatermass

Classic rock · Hard Rock

Quill

Hardcore · Psychedelic

Race Horses

Indie Rock · Indie

Rainbow Arabia

Electronic · Psychedelic

Rangda

Experimental · Psychedelic

Raygun

Rock · House

Relay

Indie · Experimental

Richard Youngs

Folk · Experimental

Rinkadink

Electronic · Psychedelic

Robin Scott

Folk · Singer-songwriter