| Group | Title | Price |
Description |
| OBSCURA | La Citta Invisibili | £8.50 | Guitarist of Moongarden/Submarine new group |
| ODISSEA | Odissea | £8.50 |
Overlooked Italian, like Banco |
| ODYSSICE | Impressions | £7.00 |
Superb Dutch prog with stunning guitar |
| OKUMOTO, RYO | Coming Through (2CD) | £9.50 |
Rock fusion from Spocks Beard man |
| OMEGA | Trombitas Fredi Es A ... | £4.50 | |
| ORPHAN PROJECT | Orphan Found | £8.50 |
USA - intricate melodic prog |
| ORPHEO | Echoes | £6.50 |
Dutch symphonic prog |
| OSI | Free | £10.00 |
2006 heavier offering |
| OSI | Office of Strategic Influence | £10.00 |
Mike Portnoy's heavy supergroup |
| OSI | Office Of Strategic Influence (Ltd 2CD digi) | £11.00 | Ltd 2CD digi |
| OUTER LIMITS | Stromatolite | £8.50 |
Japanese, new release |
| OVERHEAD | Metaepitome | £8.50 |
|
| OVERHEAD | Zumanthium | £8.50 |
|
| OZONE QUARTET | Fresh Blood | £7.50 |
USA fusion + violin |