Trefry has seen 75 bands.

Band Concerts Seen
  Billy Talent 3 concerts
  In Flames 2 concerts
  Killswitch Engage 2 concerts
  Marilyn Manson 2 concerts
  Slipknot 2 concerts
  The Offspring 2 concerts
  Trivium 2 concerts
  Alice Cooper 1 concert
  Alice In Chains 1 concert
  All Shall Perish 1 concert
  All That Remains 1 concert
  Anthrax 1 concert
  As I Lay Dying 1 concert
  Bad Religion 1 concert
  Between The Buried And Me 1 concert
  Blind Witness 1 concert
  Cannibal Corpse 1 concert
  Carcass 1 concert
  Catalyst 1 concert
  Children Of Bodom 1 concert
  Cradle of Filth 1 concert
  Cypress Hill 1 concert
  Danzig 1 concert
  Dead Kennedys 1 concert
  Deftones 1 concert