Justine Kostka has seen 23 bands.

Band Concerts Seen
  Only The Poets 9 concerts
  Isaac Anderson 5 concerts
  Michael Blackwell 5 concerts
  Dritte Wahl 4 concerts
  Wincent Weiss 4 concerts
  Boy Bleach 3 concerts
  Ed Sheeran 3 concerts
  Louis Tomlinson 2 concerts
  Yungblud 2 concerts
  Anne-Marie 1 concert
  Ear Candy 1 concert
  Erasure 1 concert
  Extrabreit 1 concert
  James Bay 1 concert
  Jamie Lawson 1 concert
  Jonny und jakob 1 concert
  Lewis Capaldi 1 concert
  Måneskin 1 concert
  Oliver Keane 1 concert
  Robbie Williams 1 concert
  The Gardener & The Tree 1 concert
  Tom Millichamp 1 concert
  Zara Larsson 1 concert