Time warp back to an era where big hair and squealies dominated rock music! Holy Grail, a quintet from Los Angeles, is back the type of metal that used to exist, before all the kids in fitted baseball hats and basketball shorts took it over. Their music has a lot of shredding and raw vocals that aren’t really seen in modern day metal. You can catch them opening for Amon Amarth at Irving Plaza on April 25. Tickets are $25. myspace.com/holygrailofficial.