Artisti — OR
- Oracle
- Orakle
- Oral Bee
- Oran Juice
- Oran Juice Jones
- Orange
- Orange 9mm
- Orange And Lemons
- Orange August
- Orange Blue
- Orange Goblin
- Orange Island
- Orange Juice
- Orange Letter
- Orange Merchants
- Orange Monkey
- Orange Pekoe
- Orange Range
- Orange Sky
- Orange Spade
- Oranger
- Orangetommorrow
- Orangotang
- Oranssi Paska
- Oratorio
- Oratory
- Orba Squara
- Orbison Roy
- Orbit
- Orbital
- Orchard Of Pain
- Orchestral
- Orchestral Manoeuvres In The Dark
- Orchestrate The Incident
- Orchid
- Ordalium
- Order 52
- Order From Chaos
- Order Of The Ebon Hand
- Ordinary Peoples
- Ordination Of Aaron
- Ordo Draconis
- Ordo Equilibrio
- Ordo Equitum Solis
- Ordo Rosarius Equilibrio
- Ore Ska Band
- Oreglio Francesco
- Oreja De Bango
- Orell
- Oren Lavie
- Orenda Fink
- Organic Critters
- Organic Infest
- Organic Revolution Orchestra
- Organism 12
- Organized Konfusion
- Organized Konfusion Oc
- Organized Rhyme
- Orgy
- Orhan Murad
- Orient Pearl
- Orietta Berti
- Origa
- Origami
- Origene
- Origin
- Original 3
- Original Alpenland Quintett
- Original Broadway Cast
- Original Broadway Castoriginal Broadway Cast
- Original Flavor
- Original Naabtal Duo
- Original Savers
- Originoo Gunn Clapperz
- Orininal Oberkrainer
- Oriol Carrio
- Orion
- Orion Riders
- Orion Rigel Dommisse
- Orion The Hunter
- Orion Too
- Orishas
- Orkest
- Orkid Abdullah
- Orkidea
- Orkiestra Dni Naszych
- Orkiestra Na Zdrowie
- Orkrist
- Orlando
- Orlando Brown
- Orlando Riva Sound
- Orleans
- Orleya
- Orlik
- Orly Factor
- Orme
- Ornatos Violeta
- Ornob
- Oro
- Oro Norteno
- Orodruin
- Orphan City
- Orphanage
- Orphaned Land
- Orphee
- Orpheus
- Orquesta Colon
- Orquesta Guayacan
- Orquesta La Palabra
- Orquesta Mondragon
- Orrin Hatch
- Orrin Tucker
- Orso
- Orson
- Orson Welles
- Ortal
- Ortega
- Orthanc
- Orthodox
- Orthodox Celts
- Orton Beth
- Orup
- Oryan