John William Casey has seen 41 bands.

Band Concerts Seen
  Phish 12 concerts
  Eggy 6 concerts
  The Avett Brothers 5 concerts
  My Morning Jacket 3 concerts
  Tea Leaf Green 3 concerts
  Yonder Mountain String Band 2 concerts
  A Lion Named Roar 1 concert
  alt-J 1 concert
  Atari Teenage Riot 1 concert
  Bombino 1 concert
  Churchill 1 concert
  Cornmeal 1 concert
  Dan Deacon 1 concert
  Dave Matthews Band 1 concert
  Days of the New 1 concert
  El-P 1 concert
  "Forecastle Festival" 1 concert
  Grace Potter 1 concert
  Greensky Bluegrass 1 concert
  Jackson Browne 1 concert
  Jerry Cantrell 1 concert
  Killer Mike 1 concert
  Margot Price 1 concert
  Metallica 1 concert
  Moonalice 1 concert