Reviews - O
| Band/Artist | Title | Style | Label | Year |
Grade |
| Oracle | Desolate Kings | Power Metal | DiveBomb | 2010 | No Quote |
| Oratorio | The Reality Of Existence | Power Metal | Rivel | 2003 | 75% |
| Oratorio | Redemption | Heavy Metal | Rivel | 2007 | 85% |
| Orphan Project | Orphan Found | Progressive Hard Rock | Independent | 2003 |
75% |
| Orphan Project | Spooning Out The Sea | Progressive Hard Rock | NePlusUltra Music | 2009 | 90% |
