Powerwolf just proved that power metal has never been bigger. They might not embrace the tag, but the German werewolf-priests are only the second band in the subgenre to headline an arena in the UK - Sabaton were first - and they took to it with all the enthusiasm of a pyromaniac to a bonfire.
It's not even seven o'clock and already Wembley is filling up, a curtain on the backwall the only sign the venue isn't sold out. You don't need to count the masses of inflatable pickaxes held aloft to tell Wind Rose are fast-rising stars of the genre.
