Johnnie Duffy has seen 240 bands.

Band Concerts Seen
  Citizen 7 concerts
  Mayday Parade 6 concerts
  Movements 5 concerts
  Cane Hill 4 concerts
  Grayscale 4 concerts
  Knocked Loose 4 concerts
  Knuckle Puck 4 concerts
  Motionless In White 4 concerts
  Real Friends 4 concerts
  This Wild Life 4 concerts
  Twenty One Pilots 4 concerts
  Afterlife 3 concerts
  Code Orange 3 concerts
  Dayseeker 3 concerts
  Greyhaven 3 concerts
  Kublai Khan TX 3 concerts
  Modern Color 3 concerts
  Slipknot 3 concerts
  Thornhill 3 concerts
  Vended 3 concerts
  Waterparks 3 concerts
  5 Seconds of Summer 2 concerts
  After the Burial 2 concerts
  All Time Low 2 concerts
  Alpha Wolf 2 concerts