John Williams has seen 360 bands.

Band Concerts Seen
  Motörhead 7 concerts
  Frank Turner & The Sleeping Souls 6 concerts
  Maxïmo Park 6 concerts
  Nerina Pallot 5 concerts
  Del Amitri 4 concerts
  Gillan 4 concerts
  Nina Nesbitt 4 concerts
  The Script 4 concerts
  Thin Lizzy 4 concerts
  Whitesnake 4 concerts
  Bastille 3 concerts
  Hawkwind 3 concerts
  Hudson Taylor 3 concerts
  Imagine Dragons 3 concerts
  Pikey Beatz 3 concerts
  Rationale 3 concerts
  Riot 3 concerts
  Saxon 3 concerts
  The Stranglers 3 concerts
  Tidelines 3 concerts
  AC/DC 2 concerts
  Alabama 3 2 concerts
  Athlete 2 concerts
  Bauhaus 2 concerts
  Billy Bragg 2 concerts