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OSTROGOTH
artist : OSTROGOTHcountry : Belgiumgenre : Heavy Metal,…
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OSSIAN
artist : OSSIANcountry : Hungarygenre : Heavy Metal, Po…
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OSLO
artist : OSLOcountry : Norwaygenre : Hard Rock, AOR Stu…
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OSIRIS
artist : OSIRIScountry : Netherlandsgenre : Progressive…
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王様
artist : 王様country : Japangenre : Hard Rock, Rock Studi…
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O’RYAN
artist : O’RYANcountry : United Kingdomgenre : Ha…
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ORPHANAGE
artist : ORPHANAGEcountry : Netherlandsgenre : Death Me…
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ORPHAN ALLIES
artist : ORPHAN ALLIEScountry : United Statesgenre : He…
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ORIONS SWORD
artist : ORIONS SWORDcountry : Swedengenre : Heavy Meta…
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ORION’S REIGN
artist : ORION’S REIGNcountry : Greecegenre : Sym…
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ORIGINAL SIN
artist : ORIGINAL SINcountry : United States – Ja…
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ORIGINAL SIN
artist : ORIGINAL SINcountry : United States – Lo…
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THE ORGANIZATION
artist : THE ORGANIZATIONcountry : United Statesgenre :…
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ORDEN OGAN
artist : ORDEN OGANcountry : Germanygenre : Power Metal…
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ORAL
artist : ORALcountry : United Kingdomgenre : Heavy Meta…
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ORACLE SUN
artist : ORACLE SUNcountry : Italygenre : Power Metal, …
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ORACLE
artist : ORACLEcountry : United States – Jacksonv…
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ORACLE
artist : ORACLEcountry : United States – Greensbo…
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ORACLE
artist : ORACLEcountry : Gibraltargenre : Heavy Metal S…
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OPETH
artist : OPETHcountry : Swedengenre : Progressive Death…
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OPEN SKYZ
artist : OPEN SKYZcountry : United Statesgenre : Hard R…
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ONSLAUGHT
artist : ONSLAUGHTcountry : United Kingdomgenre : Thras…
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陰陽座
artist : 陰陽座country : Japangenre : Heavy Metal Studio A…
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ONLY CHILD
artist : ONLY CHILDcountry : United Statesgenre : Hard …
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ONEY
artist : ONEYcountry : United Statesgenre : Hard Rock, …
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OMEN
artist : OMENcountry : United Statesgenre : Heavy Metal…
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OMEN
artist : OMENcountry : United Kingdomgenre : Heavy Meta…
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OMEGA
artist : OMEGAcountry : United Kingdomgenre : Heavy Met…
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OLYMPOS MONS
artist : OLYMPOS MONScountry : Finlandgenre : Power Met…
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OLIVER/DAWSON SAXON
artist : OLIVER/DAWSON SAXONcountry : United Kingdomgen…
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OLIVER WEERS
artist : OLIVER WEERScountry : Denmarkgenre : Hard Rock…
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OLIVER MAGNUM
artist : OLIVER MAGNUMcountry : United Statesgenre : Po…
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OLE I’DOLE EVENRUDE (OLE, EVENRUDE)
artist : OLE I’DOLE EVENRUDE (OLE, EVENRUDE)count…
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OLD MAN’S CHILD
artist : OLD MAN’S CHILDcountry : Norwaygenre : B…
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OLAF LENK’S FOOD
artist : OLAF LENK’S FOODcountry : Germanygenre :…
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ODYSSEY
artist : ODYSSEYcountry : South Africagenre : Heavy Met…
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ODYSSEA
artist : ODYSSEAcountry : Italygenre : Power Metal Stud…
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ODIN
artist : ODINcountry : United Statesgenre : Heavy Metal…
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O’DETTE
artist : O’DETTEcountry : United Statesgenre : Ha…
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OCTOBER 31
artist : OCTOBER 31country : United Statesgenre : Heavy…
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OBÚS
artist : OBÚScountry : Spaingenre : Heavy Metal, Hard R…
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OBSTRUCTION
artist : OBSTRUCTIONcountry : Hungarygenre : Heavy Meta…
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OBSESSION
artist : OBSESSIONcountry : United Statesgenre : Heavy …
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THE OBSESSED
artist : THE OBSESSEDcountry : United Statesgenre : Doo…
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OBLIVION (OBLIVION FL)
artist : OBLIVION (OBLIVION FL)country : United Statesg…
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OBLIVIAX
artist : OBLIVIAXcountry : United Statesgenre : Heavy M…
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OBITUARY
artist : OBITUARYcountry : United Statesgenre : Death M…
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O.T. FACTOR
artist : O.T. FACTORcountry : United Statesgenre : Thra…
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O.S.S.Y.
artist : O.S.S.Y.country : Finlandgenre : Heavy Metal S…
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THE O-LARN PROJECT
artist : THE O-LARN PROJECTcountry : Thailandgenre : He…