Heavy, heavy, heavy show tonight at 7 p.m. at Siren’s Song Tavern. If you like the extreme end of metal, you’ll love the sets by Narc from Sacramento, Washington State’s Burial Rites and local chuggers and grinders Psyop Victim (whom I have given my stamp of approval to in columns past), and Grug. For this lineup, $10 seems like a steal.