| OutstandingMusic | 0 | 0 |
| OvO | 0 | 0 |
| Ovanir Buosi | 0 | 0 |
| Ovatow | 0 | 0 |
| Overcast | 3 | 0 |
| Overcast Harbor | 0 | 0 |
| Overcompensating | 0 | 0 |
| Overdose | 7 | 0 |
| Overgrown | 0 | 0 |
| Overton Widow | 0 | 0 |
| Ovi | 0 | 0 |
| Ovi Wood | 0 | 0 |
| Ovidiu Bădilă | 0 | 0 |
| Oviedo Filarmonía | 7 | 0 |
| Ovoo | 0 | 0 |
| Owain Arwel Hughes | 31 | 0 |
| Owain Park | 0 | 0 |
| Owane | 0 | 0 |
| Owen | 0 | 0 |
| Owen | 0 | 0 |
| Owen Bradley | 0 | 0 |
| Owen Bradley & His Orchestra | 0 | 0 |
| Owen Brannigan | 8 | 0 |
| Owen Burdick | 0 | 0 |
| Owen Murray | 1 | 0 |
| Owen Rees | 14 | 0 |
| Owen Temple | 0 | 0 |
| Owen Watkins | 0 | 0 |
| Owen Weaver | 0 | 0 |
| Owl | 0 | 0 |
| Oxalis Quartett | 0 | 0 |
| Oxalys | 0 | 0 |
| Oxana Shevchenko | 3 | 0 |
| Oxana Yablonskaya | 6 | 0 |
| Oxbaker | 0 | 0 |
| Oxflacko | 0 | 0 |
| Oxford Baroque | 1 | 0 |
| Oxford Contemporary Sinfonia | 0 | 0 |
| Oxford Orchestra da Camera | 0 | 0 |
| Oxford Philharmonic Orchestra | 2 | 0 |
| Oxford bach choir | 0 | 0 |
| Oxia | 0 | 0 |
| Oxis | 0 | 0 |
| Oxymoron | 4 | 0 |
| Oya Bıyıklıoğlu | 0 | 0 |
| Oyster | 0 | 0 |
| Oysterband | 0 | 0 |
| Ozan Marsh | 0 | 0 |
| Ozark Henry | 0 | 0 |
| Ozmotic | 0 | 0 |
| Ozone Player | 0 | 0 |
| Ozzy | 0 | 0 |
| OÖ. David-Trio | 0 | 0 |
| Oğulcan Yılmaz | 0 | 0 |
| Oğuzhan Balcı | 0 | 0 |
| O’Black | 0 | 0 |
| O₄Ria | 0 | 0 |
| P R U D E | 0 | 0 |
| P on the Boards | 0 | 0 |
| P'tit Belliveau | 0 | 0 |
| P*Light | 0 | 0 |
| P-27 | 3 | 0 |
| P-Ro | 0 | 0 |
| P. Ferdinandus Pankiewicz | 0 | 0 |
| P. G. Wodehouse | 0 | 0 |
| P. Toufic Maatouk | 0 | 0 |
| P.A.F.F. | 0 | 0 |
| P.D.Q. Bach | 0 | 0 |
| P.F. Cuttin’ | 0 | 0 |
| P.H.F. | 11 | 0 |
| P.J. Higgins | 0 | 0 |
| P.J. Perry | 5 | 0 |
| P.J. Proby | 0 | 0 |
| P.O.BOX | 0 | 0 |
| P.S Rafeeque | 0 | 0 |
| P.ST | 0 | 0 |
| P.Skud | 0 | 0 |
| P.T. Adamczyk | 0 | 0 |
| P0W3R$ | 0 | 0 |
| P1Harmony | 0 | 0 |
| PA. Dre | 0 | 0 |
| PAAK | 0 | 0 |
| PALAMIGA | 0 | 0 |
| PALE:node | 0 | 0 |
| PANTSU SCUM | 0 | 0 |
| PANXI | 0 | 0 |
| PAPA B | 0 | 0 |
| PAS TASTA | 0 | 0 |
| PAULY! | 0 | 0 |
| PAUW | 0 | 0 |
| PBK | 0 | 0 |
| PC Music | 0 | 0 |
| PE$O PETE | 0 | 0 |
| PEPOSOFT | 0 | 0 |
| PERSONA MUSIC BAND | 0 | 0 |
| PERSONALWILD | 0 | 0 |
| PFOTOS | 0 | 0 |
| PHACE | 0 | 0 |
| PHANTASM | 2 | 0 |
| PHVNTOMS | 0 | 0 |