John Callen has seen 32 bands.

Band Concerts Seen
  311 1 concert
  96 West 1 concert
  Alexander Zonjic and friends 1 concert
  "Alexander Zonjic's Shoreline Jazz Festival" 1 concert
  Barrel Bones 1 concert
  Basement 1 concert
  Billy Strings 1 concert
  Blues Traveler 1 concert
  Brian Culbertson 1 concert
  Bryan Lubeck 1 concert
  Dalmatian Stone 1 concert
  Dee Brown 1 concert
  Dhani Harrison 1 concert
  Echo & The Bunnymen 1 concert
  Ghost 1 concert
  Javier Colon 1 concert
  Jeff Lynne's ELO 1 concert
  Jeffrey Osborne 1 concert
  Los Colognes 1 concert
  Najee 1 concert
  Nothing More 1 concert
  Pixies 1 concert
  Pony Bradshaw 1 concert
  Rush 1 concert
  Social Distortion 1 concert