Robin Williams has seen 14 bands.

Band Concerts Seen
  A 1 concert
  Enter Shikari 1 concert
  Evanescence 1 concert
  Godsmack 1 concert
  Hell Is for Heroes 1 concert
  Innerpartysystem 1 concert
  Jay-Z 1 concert
  Limp Bizkit 1 concert
  Linkin Park 1 concert
  N.E.R.D 1 concert
  Papa Roach 1 concert
  Pendulum 1 concert
  The Bravery 1 concert
  Vex Red 1 concert