Ruben Ab has seen 13 bands.

Band Concerts Seen
  Iron Maiden 2 concerts
  Mötley Crüe 2 concerts
  The Rolling Stones 2 concerts
  Aerosmith 1 concert
  Davila 666 1 concert
  Joan Jett & The Blackhearts 1 concert
  KISS 1 concert
  Megadeth 1 concert
  Metallica 1 concert
  NOFX 1 concert
  Pantera 1 concert
  Paul McCartney 1 concert
  The Killers 1 concert