One doesn't simply listen to Angerfist. In fact, hearing the filthy hardcore house produced by the hockey mask-clad Dutchman is more akin to a gory auditory assault on your ears, where relentless waves of murky distortion and high-pitched sirens and atonal sounds pound the cochlea in excess of 300 BPM. Its also good music to stomp around to, which you're likely to see in abundance during Angerfist's headlining set at the Fear and Loathing Music Festival on Friday, August 31, at Club Red, 2155 East University Drive in Tempe. An extensive lineup of likeminded practitioners of harder-edged electronica also will perform on two different stages, including NecroFlesh and the other brutal beatsmiths of Darksiderz. Attendees can also revel in the complextro and acid house of Tempe's Skull Kids, the groovy electro sounds of Chris Romero, and high-energy EDM from more than a dozen local DJs and producers. The festival starts at 7 p.m. Admission is $20 in advance, $25 at the door. See www.purplepass.com.