Three things we learnt from this gig. Number one is that GWAR do really take it up the arse, secondly that Voivod are still gleefully subverting Metal thirty seven years after they started and finally beetroot does not come out, of anything. For Metal fans of a certain age (i.e. a teen in the eighties and distinctly middle aged in this decade) this is both an intriguing and rather puzzling bill. You see Voivod were the champions of intelligent avant-garde deconstructed Metal. Their fourth album “Dimension Hatross” is the last word in complex progressive thrash and stood head and shoulder above anything else going on. GWAR on the other hand always seemed to be the last word stupid. Dressed in gross homemade costumes, they sang simple seemingly idiotic songs and poured suspect liquids all over their audience. But here they are in 2019 sharing a stage in Manchester.