Mike Kostecke has seen 15 bands.

Band Concerts Seen
  Frank Zappa 11 concerts
  Primus 4 concerts
  The Residents 3 concerts
  Butthole Surfers 2 concerts
  Beats Antique 1 concert
  Captain Dave and the Psychedelic Lounge Cats 1 concert
  Dweezil Zappa Plays Frank Zappa 1 concert
  Ed Hall 1 concert
  Flo & Eddie 1 concert
  L7 1 concert
  Limp Bizkit 1 concert
  Portugal. The Man 1 concert
  Powerman 5000 1 concert
  Split Lip Rayfield 1 concert
  U2 1 concert