Operation Ivy, Ornette Coleman with Prime Time, Ozomatli, Ozymandias, Pain Control
- Only Crime
- Ono
- Operation Ivy
- Opeth
- Opius
- Opsis
- Optiv
- Orangetree
- Orchestral Manoeuvres In The Dark
- Orchid
- Ordalium
- Orex
- Organized Nature
- Origa
- Ornament
- Ornette Coleman Double Quartet
- Ornette Coleman Trio
- Ornette Coleman with Prime Time
- Orson
- Os Cempes
- Oscar
- Oscar Da Grouch
- Oscar Peterson and Harry Edison and Eddie
- Oscar Peterson Trio
- Oscar Peterson Trio with Herb Ellis
- Oscar Peterson With Joe Pass and Niels-Henning Orsted Pedersen
- Oscar Peterson/Joe Pass
- OST Cry Baby
- OST Passengers
- OST Robots
- OST Six-string Samurai
- OST Taxi
- Osunlade
- Otis Fodder
- Otis Redding
- Otis Rush
- Otis Spann and Fleetwood Mac
- Otis Taylor
- Ottorino Respighi
- Out Of Focus
- Outlook
- Outrage
- Outworld
- Overhuman Project
- Oversun
- Oxigen
- Ozark Mountain Daredevils
- Ozma
- Ozomatli
- Ozymandias
- O`callaghan and Kearney
- Artists on letter P
- P.Diddy (feat Christina Aguilera)
- Pacific Gas and Electric
- Paco De Lucia Ramon Algecira
- Paco de Lucia-John McLaughlin-Al Di Meola
- Paffendorf
- Pagan
- Pain Control
- Painful Memories
- Pakeni
- Paku Romi
- Paladin
- Palast Orchester und Max Raabe
- Pale Forest
- Paloma San Basilio
- Pam Tillis
- Pan Pipes
- Panacea
- Panda Bear
