- O -

• Offspring
  
  Smash
  
  
• Old Man's Child
  
  The Pagan Prosperity
  
  Ill-Natured Spiritual Invasion
  
  
• Opeth
  
  Morningrise
  
  
• Ophthalamia
  
  Dominion
  
  
• OverKill
  
  W.F.O.
  
  Necroshine
  
  
• Ozzy Osbourne
  
  Blizzard Of Ozz
  
  Diary Of A Madman
  
  The Ultimate Sin
  
  Ozzmosis