Brian O Hara has seen 10 bands.

Band Concerts Seen
  Misfits 2 concerts
  Anthrax 1 concert
  Bible Belt Byproduct 1 concert
  Candlebox 1 concert
  Cannibal Corpse 1 concert
  GWAR 1 concert
  Metallica 1 concert
  Suicidal Tendencies 1 concert
  The Who 1 concert
  Tool 1 concert