Well versed in classic metal riffs, Valkyrie mix great guitar work with somewhat gritty vocals to create their sound. Anything from Iron Maiden guitar harmonies to Richie Blackmore riffs are played as the singer does his best Danzig impression. By performing original material they have successfully resisted the urge to cover “Mother” so far. They’ll be playing the Ace of Clubs in New York City on Aug. 7. $10. 7 p.m. 21+.