Patrick O'neill has seen 478 bands.

Band Concerts Seen
  Ween 45 concerts
  Joe Russo's Almost Dead 8 concerts
  Primus 7 concerts
  Slipknot 6 concerts
  Acid Mothers Temple & The Melting Paraiso U.F.O. 5 concerts
  Black Label Society 4 concerts
  Disturbed 4 concerts
  King Gizzard & the Lizard Wizard 4 concerts
  Local H 4 concerts
  Mudvayne 4 concerts
  Nonpoint 4 concerts
  Andrew W.K. 3 concerts
  Black Sabbath 3 concerts
  Dropkick Murphys 3 concerts
  Drowning Pool 3 concerts
  Hatebreed 3 concerts
  Less Than Jake 3 concerts
  Mastodon 3 concerts
  Melvins 3 concerts
  Reveille 3 concerts
  Sevendust 3 concerts
  Sleep 3 concerts
  System of a Down 3 concerts
  All Them Witches 2 concerts
  Atreyu 2 concerts