Ahlgren has seen 114 bands.

Band Concerts Seen
  Celtic Woman 4 concerts
  Alice In Chains 3 concerts
  Breaking Benjamin 3 concerts
  Bush 3 concerts
  Five Finger Death Punch 3 concerts
  Godsmack 3 concerts
  Metallica 3 concerts
  Shinedown 3 concerts
  The Hu 3 concerts
  Three Days Grace 3 concerts
  Bad Wolves 2 concerts
  Brit Floyd 2 concerts
  Ceramic Animal 2 concerts
  Disturbed 2 concerts
  Dorothy 2 concerts
  Evanescence 2 concerts
  Ghost 2 concerts
  Halestorm 2 concerts
  In This Moment 2 concerts
  Korn 2 concerts
  Live 2 concerts
  Nothing More 2 concerts
  Saint Asonia 2 concerts
  Seether 2 concerts
  The Pretty Reckless 2 concerts