Artist
|
Released |
Catalog# |
Title |
Format |
Category |
Label |
Country |
Genres |
| Onyeabor, William (William Onyeabor) | 1978 | WRLP 1003 | Tomorrow | MP3 | world | Wilfilms | Nigeria | Nigeria/Blues |
| Operation Ivy | 1991 | | Operation Ivy | MP3 | rock | | US | Punk |
| Options | 2013 | | Epitonic saki Session | MP3 | rock | Saki Record | US | Indie |
| Orchestral Manoeuvres In The Dark | 2001 | | Navigation: The OMD B-Sides | MP3 | rock | | UK | New Wave |
| Orchestral Manoeuvres In The Dark | 2000 | | Peel Sessions 1979-1983 | MP3 | rock | | UK | Synthpop |
| Oregon | 1992 | | Always, Never and Forever | MP3 | jazz | | US | Jazz |
| Oregon | 2000 | | Best Of The Vanguard Years | MP3 | jazz | Vanguard | US | Jazz |
| Oregon | 1995 | | Beyond Words | MP3 | jazz | Chesky Records | US | Jazz |
| Oregon | 1973 | | Distant Hills | MP3 | jazz | Vanguard | US | Jazz |
| Oregon | 1987 | | Ecotopia | Tape | jazz | | US | Jazz |
| Oregon | 1977 | | Friends | MP3 | jazz | Vanguard, Vanguard | US | Jazz |
| Orquestra Moderna de Sambas | 1963 | | Sambalanco | MP3 | world | Pawal | | Samba |
| Os Mutantes | 1970 | | A Divina Comédia Ou Ando Meio Desligado | MP3 | rock | Polydor | Brazil | Rock/Latin |
| Os Mutantes | 1994 | | Ao Vivo | MP3 | rock | Som Livre | Brazil | Rock |
| Os Mutantes | 1998 | | Millennium - 20 Músicas Do Século XX | MP3 | rock | Mercury, PolyGram | Brazil | Rock/Latin |
| Os Mutantes | 1973 | | O A E O Z | MP3 | rock | Philips, EmArcy, Universal Music | Brazil | Rock/Latin |
| Os Mutantes | 3/22/2005 | | World Psychedelic Classics 1 | Tape | rock | Luaka Bop | Brazil | Psychedelic |
| Otis, Johnny (Johnny Otis) | | | Rhythm & Blues Caravan the Complete Savoy Recordings | MP3 Set | blues | | | R&B/Blues |
| Otis, Johnny (Johnny Otis) | 1970 | | The Johnny Otis Show Live at Monterey! | MP3 | jazz | | US | R&B |
| Our Ceasing Voice | 2011 | | When The Headline Hit Home | MP3 | rock | | | Rock/Trance |
| Outer Minds | 2015 | | Epitonic Chicago Music Fall 2015 | MP3 | rock | Southpaw | US | Punk |
| Owens, Buck (Buck Owens) | 2006 | | 21 #1 Hits - The Ultimate Collection | MP3 | country | | US | Country |
| Owens, Buck (Buck Owens) | 2010 | | All-Time Greaest Hits | MP3 | country | | US | Country |
| Owens, Buck (Buck Owens) | 2001 | | Young Buck (The Complete Pre-Capitol Recordings) | MP3 | country | | | Country |
| Ozomatli | 2003 | | Coming Up | CD | world | | | World |