Psychedelic

Novelist

Grime · Psychedelic

Nukli

Progressive rock · Psychedelic

Nurses

Rock · Indie Rock

O.R.k.

Progressive rock · Psychedelic

Ocelot

Psychedelic · Psytrance

Octopus

Progressive rock · Instrumental

Ohhms

Psychedelic · Doom metal

Om

Psychedelic · Doom metal

Omar Souleyman

Pop · World

Omnia Opera

Electronic · Experimental

On Trial

Psychedelic · Psychedelic rock

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