Martyn Gruneberg has seen 102 bands.

Band Concerts Seen
  Slipknot 6 concerts
  Lamb Of God 4 concerts
  Trivium 4 concerts
  In Flames 3 concerts
  Mastodon 3 concerts
  Slayer 3 concerts
  All That Remains 2 concerts
  Arch Enemy 2 concerts
  Behemoth 2 concerts
  blink-182 2 concerts
  Bloodsimple 2 concerts
  Breed 77 2 concerts
  Chimaira 2 concerts
  DevilDriver 2 concerts
  Feeder 2 concerts
  God Forbid 2 concerts
  Iron Maiden 2 concerts
  Korn 2 concerts
  Machine Head 2 concerts
  Metallica 2 concerts
  Opeth 2 concerts
  Sepultura 2 concerts
  Velvet Revolver 2 concerts
  A 1 concert
  Alice In Chains 1 concert