12172090514 has seen 20 bands.

Band Concerts Seen
  Gwar 4 concerts
  A Band of Orcs 2 concerts
  Iron Reagan 2 concerts
  Slayer 2 concerts
  Whitechapel 2 concerts
  Accept 1 concert
  Aerosmith 1 concert
  Anthrax 1 concert
  Every Time I Die 1 concert
  Fallujah 1 concert
  Killswitch Engage 1 concert
  Kreator 1 concert
  Mastodon 1 concert
  Megadeth 1 concert
  Municipal Waste 1 concert
  Rivers of Nihil 1 concert
  Squint 1 concert
  Swallow the Sun 1 concert
  The Red Chord 1 concert
  Warbeast 1 concert