Gwyn Williams has seen 2112 bands.

Band Concerts Seen
  Metallica 13 concerts
  Sonic Boom Six 13 concerts
  King Kraken 10 concerts
  Slayer 8 concerts
  Raging Speedhorn 7 concerts
  Skindred 7 concerts
  A 6 concerts
  Biffy Clyro 6 concerts
  Cancer Bats 6 concerts
  Feed the Rhino 6 concerts
  Ghouls 6 concerts
  Hundred Reasons 6 concerts
  Lawnmower Deth 6 concerts
  Megadeth 6 concerts
  Steel Panther 6 concerts
  Tigertailz 6 concerts
  Black Label Society 5 concerts
  Bowling For Soup 5 concerts
  Don Broco 5 concerts
  Fury 5 concerts
  Imperial Leisure 5 concerts
  Napalm Death 5 concerts
  Opeth 5 concerts
  Orange Goblin 5 concerts
  Ozzy Osbourne 5 concerts