Greg Holahan has seen 64 bands.

Band Concerts Seen
  Twenty One Pilots 4 concerts
  Yung Lean 4 concerts
  Bad Sounds 3 concerts
  Paramore 3 concerts
  bladee 2 concerts
  Dylan Cartlidge 2 concerts
  Indoor Pets 2 concerts
  Marmozets 2 concerts
  Queen Zee 2 concerts
  Viagra Boys 2 concerts
  A Day To Remember 1 concert
  Aerosmith 1 concert
  Alice In Chains 1 concert
  Alter Bridge 1 concert
  Ashnikko 1 concert
  Beartooth 1 concert
  Billie Eilish 1 concert
  Black Sabbath 1 concert
  Bleached 1 concert
  Blondie 1 concert
  Bring Me The Horizon 1 concert
  Bullet for My Valentine 1 concert
  Converge 1 concert
  DeathbyRomy 1 concert
  Death Grips 1 concert