L 18 has seen 9 bands.

Band Concerts Seen
  Being As An Ocean 1 concert
  Blank Space 1 concert
  Blood Incantation 1 concert
  Cannibal Corpse 1 concert
  Gorguts 1 concert
  Hail the Sun 1 concert
  Kaonashi 1 concert
  Mayhem 1 concert
  Origami Button 1 concert