Df Derp has seen 43 bands.

Band Concerts Seen
  Iron Maiden 4 concerts
  KISS 2 concerts
  Ozzy Osbourne 2 concerts
  AC/DC 1 concert
  A Dozen Furies 1 concert
  Arch Enemy 1 concert
  As I Lay Dying 1 concert
  Black Label Society 1 concert
  Black Sabbath 1 concert
  Bon Jovi 1 concert
  Bury Your Dead 1 concert
  Gizmachi 1 concert
  I Mother Earth 1 concert
  In Flames 1 concert
  It Dies Today 1 concert
  Joan Jett 1 concert
  John 5 1 concert
  Killswitch Engage 1 concert
  Lauren Harris 1 concert
  Living Colour 1 concert
  Loudness 1 concert
  Mastodon 1 concert
  Megadeth 1 concert
  Metallica 1 concert
  Mötley Crüe 1 concert