Joel Yak has seen 14 bands.

Band Concerts Seen
  Slayer 5 concerts
  Iron Maiden 3 concerts
  King Diamond 2 concerts
  Tool 2 concerts
  Anthrax 1 concert
  Behemoth 1 concert
  D.R.I. 1 concert
  Lamb Of God 1 concert
  Megadeth 1 concert
  Metal Church 1 concert
  Soothsayer 1 concert
  the cows 1 concert
  Vinnie Vincent Invasion 1 concert
  W.A.S.P. 1 concert