23spec has seen 44 bands.

Band Concerts Seen
  Bad Religion 5 concerts
  The Interrupters 4 concerts
  NOFX 3 concerts
  blink-182 2 concerts
  Deschamp 2 concerts
  Free The Jester 2 concerts
  Goldfinger 2 concerts
  Less Than Jake 2 concerts
  Mad Caddies 2 concerts
  Pennywise 2 concerts
  A Day To Remember 1 concert
  AFI 1 concert
  AJR 1 concert
  Anarbor 1 concert
  A Wilhelm Scream 1 concert
  Bad Cop / Bad Cop 1 concert
  Badflower 1 concert
  Bryan Adams 1 concert
  Def Leppard 1 concert
  Glassjaw 1 concert
  Greta Van Fleet 1 concert
  Hell or Highwater 1 concert
  Lagwagon 1 concert
  Light Up The Sky 1 concert
  Masked Intruder 1 concert