If you miss the days when metal songs had sweeping choruses, chunky riffs and lyrics about swords and quests and dragons, then does Hammerfall have a deal for you. These Swedes have hammered out a 20-year career pretending thrash, grunge and who knows how many other heavy music trends never happened. Starting with 1997’s Glory to the Brave, the band’s been a proud standard bearer for the kind of melodic power metal many thought extinct since the mid-‘80s. Actually, thanks in no small part to that dedication, Hammerfall are credited as one of the bands most responsible for spurring the subgenre’s resurgence in mainland Europe. Show openers Flotsam and Jetsam — beyond being the outfit that gave one-time Metallica bassist Jason Newsted a start — still command an underground following for their no-nonsense brand of thrash metal. Phoenix-based Flotsam may have missed thrash’s opening wave (not to mention the big-money success Newstead tasted with Metallica), but even after myriad label and lineup changes they continue to riff with enough ferocity to sound relevant if not exactly groundbreaking.