Ian Osterlitz has seen 133 bands.

Band Concerts Seen
  Pennywise 15 concerts
  Dropkick Murphys 6 concerts
  Bad Religion 3 concerts
  Sublime With Rome 3 concerts
  The Scratch 3 concerts
  Tiger Army 3 concerts
  Alkaline Trio 2 concerts
  As I Lay Dying 2 concerts
  Descendents 2 concerts
  Gallows 2 concerts
  Killswitch Engage 2 concerts
  New Found Glory 2 concerts
  Pepper 2 concerts
  The Toasters 2 concerts
  Agent Orange 1 concert
  Alesana 1 concert
  All Left Out 1 concert
  All Time Low 1 concert
  Amber Pacific 1 concert
  Anberlin 1 concert
  As Cities Burn 1 concert
  A Static Lullaby 1 concert
  Avenged Sevenfold 1 concert
  A Wilhelm Scream 1 concert
  Bayside 1 concert