Orphaned Land (8) - Unsung Prophets & Dead Messiahs (2018)

Open Road - Windy Daze (1971;2010)

Orange Goblin (9) - The Wolf Bites Back (2018)

Opus - Opus 1 (1975;2013)

One - One (1969;2015)

Ohio Express (3,4) - Chewy Chewy & Mercy (1969)

Ohio Express (1,2) - Beg, Borrow And Steal (1967) & Ohio Express (1968)

Ohio Players (4) - Pleasure (1972;2006)

Ohio Players (3) - Pain (1971;2007) USA; Funk,Soul,Smooth Soul,Disco,Pop;

Ofra Haza - Greatest Hits vol.2 (3CD;2004) { Israel; Pop,Synthpop,Jewish Music,Dance-Pop,Mizrahi Music,Israeli Folk Music }

Odin - Odin (1972;1991) { UK/England; Hard/Prog Rock/Heavy Prog/Krautrock }

Octopus (3) - '' Rubber Angel '' (1979;2011) { Germany; Progressive Rock }

 

**** OCTOPUS#3 ****

Octopus (2) - '' An Ocean Of Rocks '' (1978;2011) { Germany; Progressive Rock }

 

**** OCTOPUS#2 ****

Octopus (1) - '' The Boat Of Thoughts '' (1977;2009) { Germany; Progressive Rock }

 

**** OCTOPUS#1 ****

Oasis (3) - '' Be Here Now '' (1997) { UK/England; Britpop,Alternative Rock,Neo-Psychedelia,Pop Rock,Psychedelic Rock,Psychedelic Pop }

 

**** OASIS#3'97 ****

Oasis (2) - '' (What's The Story) Morning Glory '' (1995) { UK/England; Britpop,Alternative Rock,Neo-Psychedelia,Pop Rock,Psychedelic Rock,Psychedelic Pop }

 

**** OASIS#2'95 ****

Oasis (1) - '' Definitely Maybe '' (1994) { UK/England; Britpop,Alternative Rock,Neo-Psychedelia,Pop Rock,Psychedelic Rock,Psychedelic Pop }

 

**** OASIS#1'94 ****

OSI (4) - '' Fire Make Thunder '' (2012) { USA; Progressive Metal,Progressive Rock,Alternative Metal,Electronic }

 

**** OSI#4FIREMKTHDR ****

OSI (3) - '' Blood '' (2009) { USA; Progressive Metal,Progressive Rock,Alternative Metal,Electronic }

 

**** OSI#3BLOOD ****

OSI (2) - '' Free '' (2006) { USA; Progressive Metal,Progressive Rock,Alternative Metal,Electronic }

 

**** OSIFREE#2 ****

OHM (3) - '' Circus Of Sound '' (2008) { USA; Jazz Rock/Jazz Rusion/Fusion Jazz Rock }

 

**** OHM#3'2008 ****

OHM (1) - '' O.H.M. '' (2003) { USA; Jazz Rock/Jazz Fusion/Fusion Jazz Rock }

 

**** OHM#1'2003 ****

OHM (2) - '' Amino Acid Flashback '' (2005) { USA; Jazz Rock/Jazz Fusion/Fusion Jazz Rock }

 

**** OHM#2'2005 ****

O.R.k. (3) - '' Ramagehead '' (2019) { World; Art Rock,Alternative Rock,Progressive Rock }

 

**** ORkRMGHEAD#3 ****

Nightwish (10) - '' Yesterwynde '' (2024) { Finland; Symphonic Metal/Power Metal/Folk Rock/Folk Metal/Orchestral }

 

**** NIHTWISH#10 ****