Katja Willliam has seen 8 bands.

Band Concerts Seen
  LINA (DE) 6 concerts
  Louis Tomlinson 3 concerts
  Harry Styles 2 concerts
  Billie Eilish 1 concert
  Damona 1 concert
  das blühende leben 1 concert
  Niall Horan 1 concert
  Sunrise Avenue 1 concert