John Zak has seen 18 bands.

Band Concerts Seen
  Dan Reed 2 concerts
  Iron Maiden 2 concerts
  AC/DC 1 concert
  Danny Vaughn 1 concert
  Dan Reed Band 1 concert
  Dan Reed Network 1 concert
  Def Leppard 1 concert
  Electric Boys 1 concert
  Far From Saints 1 concert
  FM 1 concert
  Journey 1 concert
  Mad Haven 1 concert
  Maggie Rogers 1 concert
  Nutz 1 concert
  Riot 1 concert
  Rush 1 concert
  Samia 1 concert
  Saxon 1 concert