Mark J has seen 24 bands.

Band Concerts Seen
  Coheed and Cambria 3 concerts
  Nine Inch Nails 3 concerts
  Fear Factory 2 concerts
  Autolux 1 concert
  Blue Rodeo 1 concert
  Cambria 1 concert
  Chiodos 1 concert
  Crown Lands 1 concert
  Crystal Castles 1 concert
  Dry kill Logic 1 concert
  Gates to Hell 1 concert
  Linkin Park 1 concert
  Machine Head 1 concert
  Meshuggah 1 concert
  Orbit Culture 1 concert
  Protest the Hero 1 concert
  Pulse Ultra 1 concert
  Puya 1 concert
  Queens of the Stone Age 1 concert
  Radiohead 1 concert
  Ron Hawkins 1 concert
  Spiritualized 1 concert
  System of a Down 1 concert
  The Chemical Brothers 1 concert