666sickening has seen 48 bands.

Band Concerts Seen
  Halsey 7 concerts
  G-Eazy 2 concerts
  Lady Gaga 2 concerts
  Owl City 2 concerts
  Allie X 1 concert
  Arctic Monkeys 1 concert
  Atlas Genius 1 concert
  BANNERS 1 concert
  Barns Courtney 1 concert
  Billie Eilish 1 concert
  Bishop Briggs 1 concert
  Charli XCX 1 concert
  Childish Major 1 concert
  Christine and the Queens 1 concert
  Clairo 1 concert
  Coast Modern 1 concert
  Death Cab for Cutie 1 concert
  DJ Snake 1 concert
  Dodie 1 concert
  Doja Cat 1 concert
  Dua Lipa 1 concert
  Father John Misty 1 concert
  Finneas 1 concert
  Flor 1 concert
  Gabriel Garzón-Montano 1 concert