The Autokinoton has been around for, like, ever. But constant lineup changes -- including the very recent departure of guitarist Shaun Herrera -- have recessed the band again and again over the years. In spite of this, the act has taken on each subsequent incarnation with a musical fervor and energy that course through each recording. The Furnace Room Demos, although technically a preview disc by name, is a marked exodus from the outfit's screamo-laden hardcore beginnings. Fully instrumental and totally epic in scope, it's like a Godspeed You! Black Emperor album reworked by scenester metal kids -- but without the frilly nuances that plague groups such as Ocean or Bossk. Demos spans only four songs, but the abrasive fretwork makes it feel as if it's reaching toward a breathless eternity. If it ever does come to an end, the Auto-K will see it through.