| Okładka | Wykonawca | Album | Rok | Gatunek | Typ |
|---|---|---|---|---|---|
 | Ossian [PL] | Księga chmur - tom I | 1979 | progressive folk/avantgarde | L |
 | OSTERTAG, Bob [USA] | Verbatim | 1997 | experimental/jazz | L |
 | OSTROWSKA, Małgorzata [PL] | Małgorzata Ostrowska | 1993 | pop rock | L |
 | OSTROWSKA, Małgorzata [PL] | Przed świtem | 2000 | pop rock | L |
 | OSYPOV, Igor [UKR], Quartet | dream delivery | 2016 | jazz | L |
 | Out Of Focus [D] | Four Letter Monday Afternoon | 1972 | krautrock | O |
 | Out Of Tune [PL] | Out Of Tune | 2008 | pop rock/electronic | L |
 | Out Of Tune [PL] | Lights So Bright | 2010 | pop rock/electronic | L |
 | Outlaws [USA] | Lady In Waiting | 1976 | southern rock/country rock | L |
 | Outside [GB] | Sus?icious | 1998 | acid jazz/electronic | L |