Brennen has seen 33 bands.

Band Concerts Seen
  Trans-Siberian Orchestra 3 concerts
  Ariana Grande 2 concerts
  Katy Perry 2 concerts
  3OH!3 1 concert
  Alessia Cara 1 concert
  As It Is 1 concert
  Best Of Both Worlds 1 concert
  Beth Ditto 1 concert
  Beyoncé 1 concert
  Black Veil Brides 1 concert
  Dead Girls Academy 1 concert
  Falling In Reverse 1 concert
  Halsey 1 concert
  Hannah Montana 1 concert
  Knuckle Puck 1 concert
  Little Mix 1 concert
  Machine Gun Kelly 1 concert
  Metric 1 concert
  Miley Cyrus 1 concert
  Movements 1 concert
  Normani 1 concert
  Palaye Royale 1 concert
  Sam Smith 1 concert
  Senses Fail 1 concert
  Shawn Mendes 1 concert