groupes de musique
| Nom | Type | Notoriété | Popularité |
|---|---|---|---|
| Orchestre Symphonique de la Ndr | Organisation | 14 | 0.0 |
| Orchestre Symphonique de la Nhk | Organisation | 16 | 1.2 |
| Orchestre Symphonique de la Radio Slovaque | Organisation | 8 | 0.1 |
| Orchestre Symphonique de la Rai de Rome | Organisation | 4 | 0.0 |
| Orchestre Tshi Fumb' | Organisation | 1 | 0.0 |
| Orchestre de Chambre Franz Liszt | Organisation | 6 | 0.0 |
| Orchestre de la Radio Norvégienne | Organisation | 11 | 0.1 |
| Orchestre du Hollywood Bowl | Organisation | 6 | 0.6 |
| Orchestre du Mai Musical Florentin | Organisation | 4 | 0.3 |
| Orchid | Organisation | 5 | 0.2 |
| Orchid | Organisation | 9 | 1.4 |
| Orden Ogan | Organisation | 12 | 7.9 |
| Ordnance | Organisation | 1 | 0.3 |
| Ordo Rosarius Equilibrio | Organisation | 12 | 0.0 |
| Oregon | Organisation | 12 | 3.0 |
| Orelha Negra | Organisation | 5 | 0.0 |
| Oreskaband | Organisation | 9 | 0.7 |
| Organisation | Organisation | 12 | 1.3 |
| Organiz | Organisation | 1 | 14.3 |
| Orgy | Organisation | 17 | 6.7 |
| Origin | Organisation | 12 | 3.0 |
| Original Dixieland Jass Band | Organisation | 20 | 6.7 |
| Original H | Organisation | 2 | 0.0 |
| Original Tiroler Echo | Organisation | 2 | 0.1 |
| Orion | Organisation | 2 | 1.5 |
| Orishas | Organisation | 15 | 20.5 |
| Orlando Riva Sound | Organisation | 4 | 0.5 |
| Orleans | Organisation | 5 | 2.1 |
| Orloge Simard | Organisation | 2 | 11.8 |
| Ornatos Violeta | Organisation | 4 | 1.3 |
| Orphanage | Organisation | 8 | 0.0 |
| Orphaned Land | Organisation | 27 | 14.5 |
| Orpheus Chamber Orchestra | Organisation | 8 | 0.9 |
| Orquesta Aragón | Organisation | 7 | 3.9 |
| Orquesta Típica Fernández Fierro | Organisation | 4 | 0.0 |
| Orquesta Típica de Piazzolla | Organisation | 2 | 0.0 |
| Orquesta de la Luz | Organisation | 5 | 2.2 |
| Orson | Organisation | 13 | 5.5 |
| Orthodox | Organisation | 4 | 0.1 |
| Orthodox Celts | Organisation | 9 | 0.6 |
| Orthrelm | Organisation | 5 | 0.4 |
| Orties | Organisation | 3 | 18.0 |
| Orwell | Organisation | 1 | 0.4 |
| Os Abelhudos | Organisation | 2 | 0.0 |
| Os Amigos | Organisation | 10 | 0.5 |
| Os Azeitonas | Organisation | 6 | 0.0 |
| Os Cariocas | Organisation | 4 | 0.8 |
| Os Diplomáticos de Monte-alto | Organisation | 4 | 0.5 |
| Os Faíscas | Organisation | 3 | 0.2 |
| Os Golpes | Organisation | 2 | 0.1 |