William Benedict has seen 14 bands.

Band Concerts Seen
  Iron Maiden 4 concerts
  Metallica 3 concerts
  Slayer 3 concerts
  Dio 2 concerts
  Judas Priest 2 concerts
  Megadeth 2 concerts
  Anthrax 1 concert
  Golden Earring 1 concert
  Lamb Of God 1 concert
  Motörhead 1 concert
  Ozzy Osbourne 1 concert
  Queensrÿche 1 concert
  Rush 1 concert
  Twisted Sister 1 concert