Chra20 has seen 27 bands.

Band Concerts Seen
  Das Lumpenpack 15 concerts
  Ell 2 concerts
  Arxx 1 concert
  Beatbar 1 concert
  Die Nerven 1 concert
  Egon und die Treckerfahrer 1 concert
  ELL (DE) 1 concert
  Ember Sea 1 concert
  Finder 1 concert
  Go Dots 1 concert
  Grillmaster Flash 1 concert
  Hi! Spencer 1 concert
  hound 1 concert
  Indecent Behavior 1 concert
  Kaffkiez 1 concert
  Lampe 1 concert
  Les Touristes 1 concert
  Me First And The Gimme Gimmes 1 concert
  Monsters Of Liedermaching 1 concert
  Provinz 1 concert
  RAUM27 1 concert
  Rogers 1 concert
  "Summer Stage Basel" 1 concert
  Thees Uhlmann & Band 1 concert
  Wanda 1 concert