Progressive Rock Music Bands/Artists List Starting with letter [O]

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Bands	Style	Country
O'BROTHER	Post Rock/Math rock	United States
O'LIST, DAVY	Crossover Prog	United Kingdom
O'LOGHLEN & COTTERS BEQUEST, GAVIN	Prog Folk	Australia
�-LIOST�RE	Jazz Rock/Fusion	France
O-U	RIO/Avant-Prog	Japan
O.L.D.	Experimental/Post Metal	United States
O.R.K.	Progressive Metal	United Kingdom
OAK	Crossover Prog	Norway
OAKSENHAM	Symphonic Prog	Armenia
OAQK	Post Rock/Math rock	Japan
OATS	Psychedelic/Space Rock	United States
�BERG, MATS	Jazz Rock/Fusion	Sweden
OBERLAND, FR�D�RIC D.	Progressive Electronic	France
OBERON	Crossover Prog	Italy
OBERON	Prog Folk	United Kingdom
OBIYMY DOSCHU	Crossover Prog	Ukraine
OBLIGOD / EX FOX TERRITORY	Post Rock/Math rock	Czech Republic
OBLIQUE RAIN	Progressive Metal	Portugal
OBLIVION SUN	Eclectic Prog	United States
OBLOMOV	Tech/Extreme Prog Metal	Czech Republic
OBSCURA	Rock Progressivo Italiano	Italy
OBSCURA	Tech/Extreme Prog Metal	Germany
OBSIDIAN	Tech/Extreme Prog Metal	Netherlands
OBSIDIAN KINGDOM	Experimental/Post Metal	Spain
OBSIDIAN MANTRA	Tech/Extreme Prog Metal	Poland
OBSIDIAN TIDE	Tech/Extreme Prog Metal	Israel
OBSIDIAN TONGUE	Experimental/Post Metal	United States
OBSKURIA	Psychedelic/Space Rock	Multi-National
OBSKYR	Eclectic Prog	Sweden
OBSTACLES	Post Rock/Math rock	Denmark
OC FEEF	Psychedelic/Space Rock	United States
OCARINAH	Canterbury Scene	France
OCEAN	Neo-Prog	Norway
OCEAN	Symphonic Prog	Germany
OCEAN	Heavy Prog	France
OCEAN ARCHITECTURE	Progressive Metal	United States
OCEAN DOESN'T WANT ME, THE	Experimental/Post Metal	South Africa
OCEAN'S EDGE	Progressive Metal	Greece
OCEAN, THE	Experimental/Post Metal	Germany
OCEANA COMPANY	Heavy Prog	Netherlands
OCEANBORN	Progressive Metal	United States
OCEANIC	Post Rock/Math rock	Canada
OCEANIC	Progressive Metal	Israel
OCEANICA	Progressive Metal	United Kingdom
OCEANS 5	Crossover Prog	United Kingdom
OCEANS OF NIGHT	Progressive Metal	United States
OCEANS OF SADNESS	Tech/Extreme Prog Metal	Belgium
OCEANS OF SLUMBER	Tech/Extreme Prog Metal	United States
OCEANSIZE	Psychedelic/Space Rock	United Kingdom
OCH	Krautrock	Sweden
OCHRE	Progressive Metal	Australia
OCNOS	Crossover Prog	Spain
OCOAI	Experimental/Post Metal	United States
OCRILIM	Tech/Extreme Prog Metal	United States
OCTAFISH	RIO/Avant-Prog	Germany
OCTARINE SKY	Crossover Prog	United States
OCTAVIO SENDERO	Psychedelic/Space Rock	Argentina
OCTAVISION	Progressive Metal	United States
OCTAVO	RIO/Avant-Prog	France
OCTILLIAN	Progressive Metal	Canada
OCTOBER	Jazz Rock/Fusion	United States
OCTOBER EQUUS	RIO/Avant-Prog	Spain
OCTOBER PROJECT	Prog Folk	United States
OCTOBRE	Crossover Prog	Canada
OCTOHPERA	Eclectic Prog	Brazil
OCTOPIE	Crossover Prog	Finland
OCTOPUS	Progressive Metal	Chile
OCTOPUS	Psychedelic/Space Rock	United Kingdom
OCTOPUS	Psychedelic/Space Rock	Germany
OCTOPUS (NOR)	Symphonic Prog	Norway
OCTOPUS RIDE	Psychedelic/Space Rock	Sweden
OCTOPUS SYNG	Psychedelic/Space Rock	Finland
ODD DIMENSION	Progressive Metal	Italy
ODD FICTION	Tech/Extreme Prog Metal	France
ODD JOHN HAWKINS	Eclectic Prog	Puerto Rico
ODD LOGIC	Progressive Metal	United States
ODD PALACE	Heavy Prog	Denmark
ODDARRANG	Post Rock/Math rock	Finland
ODDLAND	Progressive Metal	Finland
ODDTOMATIC	Crossover Prog	Finland
ODE AND ELEGY	Experimental/Post Metal	United States
ODEJA, THE	Rock Progressivo Italiano	Italy
ODEM ARCARUM	Tech/Extreme Prog Metal	Germany
ODESSA	Crossover Prog	Italy
ODILE	Crossover Prog	Germany
ODIN	Heavy Prog	United Kingdom
ODIN'S COURT	Progressive Metal	United States
ODISSEA	Rock Progressivo Italiano	Italy
ODOJ, ROMAN	Crossover Prog	Poland
ODRADEK ROOM	Experimental/Post Metal	Ukraine
ODRAREG	Jazz Rock/Fusion	Venezuela
ODRAZA	Experimental/Post Metal	Poland
ODYSSEE	Eclectic Prog	Germany
ODYSSEY	Progressive Metal	Sweden
ODYSSEY	Progressive Metal	United States
ODYSSICE	Symphonic Prog	Netherlands
OEIL DU SOURD, L'	Jazz Rock/Fusion	France
OF SOUND MIND	Crossover Prog	Canada
OF THE I	Heavy Prog	Switzerland
OF WONDROUS LEGENDS (O.W.L.)	Prog Folk	United States
OFFA REX	Prog Folk	Various
OFFENBACH	Prog Related	Canada
OFFERING	Zeuhl	France
OFFICINA MECCANICA	Rock Progressivo Italiano	Italy
OG MUSIQUE	Crossover Prog	Belgium
OGIVES	RIO/Avant-Prog	Belgium
OGLIN	Crossover Prog	Sweden
OGO DYS	Eclectic Prog	Sweden
OGR�D WYOBRAźNI	Crossover Prog	Poland
OGRODOWICZ, BARTOSZ	Crossover Prog	Poland
OH HIROSHIMA	Post Rock/Math rock	Sweden
OH NO ONO	Crossover Prog	Denmark
OH.	Crossover Prog	Greece
OHEAD	Psychedelic/Space Rock	United Kingdom
OHGOD!	Experimental/Post Metal	South Africa
OHM	Jazz Rock/Fusion	United States
OHMPHREY	Jazz Rock/Fusion	United States
OHO	RIO/Avant-Prog	United States
OIAPOK	Jazz Rock/Fusion	France
OINGO BOINGO	Crossover Prog	United States
OISEAUX - TEMPETE	Post Rock/Math rock	France
OK GOODNIGHT	Progressive Metal	United States
OKETO	Post Rock/Math rock	United States
OKO	Heavy Prog	Yugoslavia
OKTA LOGUE	Psychedelic/Space Rock	Germany
OKTOBER	Krautrock	Germany
OKTOPUS	Heavy Prog	United Kingdom
OKUMOTO, RYO	Eclectic Prog	Japan
OKYR	Progressive Metal	Brazil
OLD DEAD TREE, THE	Experimental/Post Metal	France
OLD MAN & THE SEA, THE	Crossover Prog	Denmark
OLD MAN GLOOM	Experimental/Post Metal	United States
OLD MILL FREE ENSEMBLE, THE	Psychedelic/Space Rock	Italy
OLD ROCK CITY ORCHESTRA	Crossover Prog	Italy
OLD TIME RELIJUN	RIO/Avant-Prog	United States
OLDFIELD, MIKE	Crossover Prog	United Kingdom
OLDFIELD, SALLY	Crossover Prog	Ireland
OLE LUKKOYE	Psychedelic/Space Rock	Russia
OLIVE MESS	RIO/Avant-Prog	Latvia
OLIVER	Crossover Prog	United Kingdom
OLLOCS	Heavy Prog	United States
OLOFERNE	Prog Folk	Italy
OM ART FORMATION	Prog Related	Bulgaria
OMB	Experimental/Post Metal	Israel
OMBRA DELLA SERA, L'	Rock Progressivo Italiano	Italy
OMBRALUCE	Rock Progressivo Italiano	Italy
OMEGA	Psychedelic/Space Rock	Hungary
OMEGA EXPERIMENT, THE	Experimental/Post Metal	United States
OMEGA MASSIF	Experimental/Post Metal	Germany
OMENOPUS	Psychedelic/Space Rock	United Kingdom
OMERTAH	Experimental/Post Metal	Ukraine
OMESTHESIA	Psychedelic/Space Rock	Spain
OMIE WISE	Eclectic Prog	Portugal
OMIT	Progressive Electronic	New Zealand
OMNEROD	Tech/Extreme Prog Metal	Belgium
OMNI	Prog Folk	Spain
OMNIA	Symphonic Prog	Argentina
OMNIA OPERA	Psychedelic/Space Rock	United Kingdom
OMNIBEING	Progressive Metal	Belarus
OMNIFIC, THE	Progressive Metal	Australia
OMNIPOTENT YOUTH SOCIETY	Eclectic Prog	China
OMNIPRESENT	Crossover Prog	United States
OMNISIGHT	Progressive Metal	United States
OMOIDE HATOBA	Krautrock	Japan
ON THE RAW	Jazz Rock/Fusion	Spain
ONCE AND FUTURE BAND	Crossover Prog	United States
ONCE THEM EDENS	Tech/Extreme Prog Metal	Greece
ONE	Symphonic Prog	Argentina
ONE OF THESE DAYS & THEE HEAVY RANDOM TONE COLOUR LAB	Psychedelic/Space Rock	Spain
ONE SHOT	Jazz Rock/Fusion	France
ONE STARVING DAY	Experimental/Post Metal	Italy
ONE STEP FROM THE EDGE	Tech/Extreme Prog Metal	Greece
ONE SWITCH TO COLLISION	Psychedelic/Space Rock	Multi-National
ONEIDA	Psychedelic/Space Rock	United States
ONEIRA, THE	Crossover Prog	Multi-National
ONEIRONAUGHT	Progressive Metal	United States
ONEOHTRIX POINT NEVER	Progressive Electronic	United States
ONEVOICE	Crossover Prog	United States
ONGKARA	Crossover Prog	Russia
ONGO	Progressive Metal	Puerto Rico
ONIRIC	Crossover Prog	Italy
ONIRIC PROJECT	Crossover Prog	Italy
ONIRIS	Symphonic Prog	France
ONIRIST, THE	Neo-Prog	France
ONO, RYOKO	Zeuhl	Japan
ONS�GEN ENSEMBLE	Heavy Prog	Finland
ONTALVA, �NGEL	Jazz Rock/Fusion	Spain
ONTOFIELD	Crossover Prog	United Kingdom
ONTOGENY	Tech/Extreme Prog Metal	United States
ONYOU	Krautrock	United States
ONYRIC JOY	Psychedelic/Space Rock	Spain
ONYSUS	Progressive Metal	Portugal
ONYX EYES	Progressive Metal	Germany
ONZA	Neo-Prog	Spain
OOIOO	RIO/Avant-Prog	Japan
�OOOOOOOOOO	Experimental/Post Metal	France
O�PHOI	Progressive Electronic	Italy
OORT	Neo-Prog	France
OORT SMOG	RIO/Avant-Prog	United States
OPA	Jazz Rock/Fusion	Uruguay
OPABINIA	RIO/Avant-Prog	Japan
OPALE	Crossover Prog	France
OPEN AIR	Crossover Prog	France
OPEN EYE BAND	Prog Folk	Finland
OPEN WINDOW, THE	Eclectic Prog	United States
OPENSIGHT	Progressive Metal	Colombia
OPENSPACE	Progressive Metal	Poland
OPERA OSCURA	Progressive Metal	Italy
OPERATION: MILKSNATCH	Eclectic Prog	United States
OPETH	Tech/Extreme Prog Metal	Sweden
OPHICINA	Rock Progressivo Italiano	Italy
OPHIUCUS	Crossover Prog	France
OPIUM CARTEL, THE	Crossover Prog	Norway
OPOSSUM	Jazz Rock/Fusion	Germany
OPPOSING MOTION	Progressive Metal	United Kingdom
OPPOSITE EARTH	Progressive Metal	United States
OPPOSITE OF HATE, THE	Progressive Metal	Brazil
OPRA MEDITERRANEA	Rock Progressivo Italiano	Italy
OPRAM	Heavy Prog	France
*OPTICAL8**	RIO/Avant-Prog	Japan
OPUS	Symphonic Prog	Yugoslavia
OPUS 3	Heavy Prog	Chile
OPUS AVANTRA	RIO/Avant-Prog	Italy
OPUS D�I	Progressive Metal	United States
OPUS EST	Neo-Prog	Sweden
OPUS OF A MACHINE	Progressive Metal	Australia
OPUS SYMBIOSIS	Crossover Prog	Finland
OPUS TIDE	Progressive Metal	United Kingdom
OPUS V	Progressive Metal	Brazil
OPUS-5	Jazz Rock/Fusion	Canada
OPUSCULUS	Heavy Prog	Canada
ORA NOMBRO	Progressive Metal	Italy
ORACLE MACHINE, THE	Progressive Metal	Germany
ORAKLE	Tech/Extreme Prog Metal	France
ORANGE CLOCKS	Psychedelic/Space Rock	United Kingdom
ORANGE PEEL	Krautrock	Germany
ORANGE SHADING STARLIGHT	Psychedelic/Space Rock	Italy
ORANGE TULIP CONSPIRACY	RIO/Avant-Prog	United States
ORANSSI PAZUZU	Experimental/Post Metal	Finland
ORANZADA	Psychedelic/Space Rock	Poland
ORATRISM	Heavy Prog	France
ORBS	Crossover Prog	United States
ORCHESTRA NJERVUDAROV	RIO/Avant-Prog	Italy
ORCHESTRA OF THE UPPER ATMOSPHERE	RIO/Avant-Prog	United Kingdom
ORCHESTRA PANICA	Crossover Prog	Italy
ORCHESTRE CELESTI	Crossover Prog	Italy
ORCHESTRE SYMPATHIQUE, L'	Jazz Rock/Fusion	Canada
ORDER OF THE LIVING	Eclectic Prog	Finland
ORDINAIRES, THE	RIO/Avant-Prog	United States
ORDINARY BRAINWASH	Crossover Prog	Poland
ORDO DRACONIS	Experimental/Post Metal	Netherlands
OREGON	Jazz Rock/Fusion	United States
OREJAS Y LA LENGUA, LAS	RIO/Avant-Prog	Argentina
ORENDA	Progressive Metal	France
�RESUND SPACE COLLECTIVE	Psychedelic/Space Rock	Multi-National
ORFANADO	Prog Folk	Italy
ORFORD, MARTIN	Neo-Prog	United Kingdom
ORGAN:	Experimental/Post Metal	Norway
ORGANIC IS ORGASMIC	Psychedelic/Space Rock	Russia
ORGANIC NOISES	Jazz Rock/Fusion	Poland
ORGANIC REACTION	Progressive Metal	Brazil
ORGANISATION	Krautrock	Germany
ORGANIZED CHAOS	Progressive Metal	Serbia
ORGIYA PRAVEDNIKOV	Eclectic Prog	Russia
ORGONE	Tech/Extreme Prog Metal	United States
ORIENT D'�, L'	Symphonic Prog	Canada
ORIENT EXPRESS, THE	Indo-Prog/Raga Rock	Multi-National
ORIENT SQUEEZERS	Indo-Prog/Raga Rock	Sweden
ORIENTAL SUNSHINE	Indo-Prog/Raga Rock	Multi-National
ORIGENS	Heavy Prog	Brazil
ORIGINS	Eclectic Prog	United States
ORION	Symphonic Prog	France
ORION	Crossover Prog	Georgia
ORION DUST	Heavy Prog	France
ORION TANGO	Psychedelic/Space Rock	United States
ORION'S BEETHOVEN	Psychedelic/Space Rock	Argentina
�RKENKJ�TT	Experimental/Post Metal	Norway
ORLANDO, ANDREA	Rock Progressivo Italiano	Italy
ORLANDO, MICHAEL	Progressive Metal	United States
ORME, LE	Rock Progressivo Italiano	Italy
ORNE	Eclectic Prog	Finland
ORNITHOS	Rock Progressivo Italiano	Italy
ORPHAN BLOOM	Heavy Prog	United States
ORPHAN PROJECT	Crossover Prog	United States
ORPHANED LAND	Experimental/Post Metal	Israel
ORPHEO	Heavy Prog	Netherlands
ORPHEUS	Crossover Prog	United Kingdom
ORPHEUS	Neo-Prog	Japan
ORPHEUS GHOSTSONG	Prog Folk	United Kingdom
ORPHEUS NINE	Heavy Prog	United States
ORQUESTA METAF�SICA	RIO/Avant-Prog	Argentina
ORSAK:OSLO	Psychedelic/Space Rock	Sweden
ORTHODOX	Experimental/Post Metal	Spain
ORTHOTONICS, THE	RIO/Avant-Prog	United States
ORTHRELM	Tech/Extreme Prog Metal	United States
ORVALIANS	Zeuhl	France
ORYZHEIN	Prog Folk	Canada
OS MUNDI	Eclectic Prog	Germany
OSADA VIDA	Heavy Prog	Poland
OSAGE TRIBE	Rock Progressivo Italiano	Italy
OSANNA	Rock Progressivo Italiano	Italy
OSCILLATION, THE	Psychedelic/Space Rock	United Kingdom
OSCILLAZIONI ALCHEMICO KREATIVE (O.A.K.)	Rock Progressivo Italiano	Italy
OSCILLOTRON	Progressive Electronic	Sweden
OSE	Progressive Electronic	France
OSHEAN	Post Rock/Math rock	Russia
OSI	Experimental/Post Metal	United States
OSIBISA	Jazz Rock/Fusion	Ghana
OSIRIS	Neo-Prog	Bahrain
OSIRIS	Tech/Extreme Prog Metal	Netherlands
OSIRIS THE REBIRTH	Psychedelic/Space Rock	United Kingdom
OSJAN / EX OSSIAN	Indo-Prog/Raga Rock	Poland
OSSI DURI	RIO/Avant-Prog	Italy
OSSICLES	Crossover Prog	Norway
OSTA LOVE	Crossover Prog	Germany
OSTINATO	Post Rock/Math rock	United States
�STR�M, MAGNUS	Jazz Rock/Fusion	Sweden
OSTROVA	Experimental/Post Metal	Spain
OSTURA	Progressive Metal	Lebanon
OT&DO	Crossover Prog	Russia
OTAKA, KIYOMI	Jazz Rock/Fusion	Japan
OTEME	RIO/Avant-Prog	Italy
OTHELLO SYNDROME , THE	Eclectic Prog	United Kingdom
OTHER SIDE OF THE SKY, THE	Experimental/Post Metal	United States
OTHER SIDE, THE	Neo-Prog	United States
OTHERS BY NO ONE	Tech/Extreme Prog Metal	United States
OTIS GROVE	Jazz Rock/Fusion	United States
OTOLITHEN	RIO/Avant-Prog	Multi-National
OTOMO YOSHIHIDE	RIO/Avant-Prog	Japan
OTOWALA	Jazz Rock/Fusion	United States
OTRACINA, LA	Psychedelic/Space Rock	United States
OTTONE PESANTE	Experimental/Post Metal	Italy
OU	Progressive Metal	China
OUGENWEIDE	Prog Folk	Germany
OULU SPACE JAM COLLECTIVE	Psychedelic/Space Rock	Finland
OUR MAN IN THE BRONZE AGE	Heavy Prog	United Kingdom
OUR OCEANS	Crossover Prog	Netherlands
OUR SOLAR SYSTEM	Krautrock	Sweden
OUT OF FOCUS	Jazz Rock/Fusion	Germany
OUT OF THE BEARDSPACE	Eclectic Prog	United States
OUTCAST	Tech/Extreme Prog Metal	France
OUTER LIMITS	Symphonic Prog	Japan
OUTERSPACE MILKMEN, THE	Psychedelic/Space Rock	Multi-National
OUTOPSYA	Experimental/Post Metal	Italy
OUTRE MESURE	Jazz Rock/Fusion	France
OUTRUN THE SUNLIGHT	Experimental/Post Metal	United States
OUTSIDE	Neo-Prog	France
OUTSIDE IN	Crossover Prog	New Zealand
OUTWORLD	Progressive Metal	United States
OVALS, THE	Psychedelic/Space Rock	Australia
OVER THE EARTH	Crossover Prog	France
OVERDRIVE	Neo-Prog	Italy
OVERHEAD	Crossover Prog	Finland
OVERLIFE	Progressive Metal	Spain
OVERLOAD	Neo-Prog	Pakistan
OVERMARS	Experimental/Post Metal	France
OVERTURE	Rock Progressivo Italiano	Italy
OVERWORLD DREAMS	Neo-Prog	United States
OVNI	Neo-Prog	El Salvador
OVRFWRD	Heavy Prog	United States
OVUM	Post Rock/Math rock	Japan
OWANE	Jazz Rock/Fusion	Norway
OWL	Tech/Extreme Prog Metal	Germany
OWL WATCHES, THE	Jazz Rock/Fusion	United States
OX.EAGLE.LION.MAN	Crossover Prog	United Kingdom
OXES	Post Rock/Math rock	United States
OXHUITZA	Psychedelic/Space Rock	Italy
OXIMORA	Heavy Prog	Mexico
OXIPLEGATZ	Progressive Metal	Sweden
OXOMAXOMA	RIO/Avant-Prog	Mexico
�XX� X��X	Experimental/Post Metal	France
OYSTERHEAD	Prog Related	United States
OZ URUGULU	Eclectic Prog	Switzerland
OZONE QUARTET	Jazz Rock/Fusion	United States
OZRIC TENTACLES	Psychedelic/Space Rock	United Kingdom