John Allen has seen 36 bands.

Band Concerts Seen
  Metallica 3 concerts
  Bob Geldof 1 concert
  Brian May + Spike Edney 1 concert
  David Bowie 1 concert
  Def Leppard 1 concert
  Elizabeth Taylor 1 concert
  Extreme 1 concert
  Guns N' Roses 1 concert
  Kvelertak 1 concert
  Lisa Stansfield 1 concert
  Machine Head 1 concert
  Mango Groove 1 concert
  Nine Inch Nails 1 concert
  Queen 1 concert
  Queen + Axl Rose 1 concert
  Queen + David Bowie and Annie Lennox 1 concert
  Queen + David Bowie and Mick Ronson 1 concert
  Queen + Elton John and Axl Rose 1 concert
  Queen + Elton John and Tony Iommi 1 concert
  Queen + Gary Cherone and Tony Iommi 1 concert
  Queen + George Michael 1 concert
  Queen + George Michael and Lisa Stansfield 1 concert
  Queen + Ian Hunter, David Bowie, Mick Ronson, Joe Elliot and Phil Collen 1 concert
  Queen + James Hetfield and Tony Iommi 1 concert
  Queen + Joe Elliot and Slash 1 concert