More than half a century into its life, what exactly is heavy metal? Is it a kind of belief system? Is it something to be observed as a museum piece, or an exhibit in a museum? Or is it, to paraphrase Christopher Lee’s Due de Richeleau in The Devil Rides Out “A living force, which can strike at any moment of the night”? Needless to say, SPELL, Vancouver’s next-level metal magicians, have plenty of thoughts on the matter. And as far as they’re concerned, heavy metal is something that needs to evolve to stay vibrant and exciting. This has been the fuel for their fifth album, the brashly confident Wretched Heart. What’s more, this relentless evolutionary momentum has led to them creating their strongest record to date - a thunderous celebration of individualism and eccentricity which stalks its nocturnal realm with savage finesse and beguiling charm.