Allen 20 has seen 57 bands.

Band Concerts Seen
  Metallica 4 concerts
  Alice Cooper 3 concerts
  Breaking Benjamin 2 concerts
  Disturbed 2 concerts
  Foreigner 2 concerts
  Guns N' Roses 2 concerts
  Halestorm 2 concerts
  Kid Rock 2 concerts
  Mammoth WVH 2 concerts
  Shania Twain 2 concerts
  98 Degrees 1 concert
  Aerosmith 1 concert
  Billy Joel 1 concert
  Black Stone Cherry 1 concert
  Black Veil Brides 1 concert
  Cheap Trick 1 concert
  Chevelle 1 concert
  Dance Gavin Dance 1 concert
  Daughtry 1 concert
  Def Leppard 1 concert
  Falling In Reverse 1 concert
  Filter 1 concert
  Five Finger Death Punch 1 concert
  Gavin DeGraw 1 concert
  Grand Funk Railroad 1 concert