It's a veritable smorgasboard of tasty underground bands when LA's mathy hardcore/emo band Calculator. plays the ZACC, along with the Plurals, Sama Dams, Catherine Feeny, you.may.die.in.the.desert and Commissure. Everything from singer-songwriter to post rock, plus those silly Whoopass Girls might show up, too. 235 N. First St. $5. 7-11 PM. All ages, no alcohol.