L 18 has seen 13 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
  Knocked Loose 1 concert
  Loathe 1 concert
  Mayhem 1 concert
  Origami Button 1 concert
  Show Me The Body 1 concert
  Speed 1 concert