The 2005 debut from the doom-metal trio Indian starts with elements of post-rock seeping into the sludge of the opening track, “No Able Fires.” But this is hardly a bad thing. (And since Indian hails from Chicago—a.k.a. post-rock’s Ground Zero—it’s hardly avoidable.) Bill Bumgardner’s drums don’t even enter the equation until the second track, “Ration.” That song sprawls for nine minutes and 35 seconds with brontosaurus-sized guitar distortion and Ron Defries’ towering bass, which dares to dwarf four-string titan Al Cisneros. Dylan O’Toole’s hoarse howls add a nice hint of black metal here and throughout The Unquiet Sky. It’s a refreshing change from the many vocalists of this genre who try to approximate pitching down Ozzy Osbourne’s singing, as if they were spinning a Black Sabbath vinyl 45 at 33 rotations per minute. Indian adds in some cosmic-sounding analog accouterments to “Dead Weight” as O’Toole spits out demonic hisses, sounding a bit like Gaahl from Gorgoroth at times. “Loophole Noose” boasts more than five minutes of astral guitar feedback.