Maximum riffage from Portland, Oregon, tore apart the Shredder in Boise on Saturday night courtesy of Lord Dying, a four-piece unit whose third LP, Mysterium Tremendum, had just dropped two weeks before.

With a full-bodied metal sound — colloquially coded as “progressive sludge,” but in fact quite broad in its appeal — the band dished out a pair of tracks from the new record (including focal track “Envy the End”), along with five other wall-shaking tunes.

Bulky, Tad-size frontman Erik Olson brutalized the stage with an onslaught of heavy sequences and deft transitions, interplaying with second guitarist Chris Evans and bassist Matt Price, who donned an appropriately suited Enslaved T-shirt.

Longhaired fans gazed at the quartet, rounded out by drummer Chase Manhattan, through, as they mesmerized the crowd with minor epics that run shorter than those of Enslaved. (Lord Dying’s set itself, however, could have used some length, as it lasted only 35 minutes.)

From moments of psychedelic exploration to speedier songs to bottom-heavy blasters, the Portlanders eschewed melodies, choruses and even hooks in favor of a rough-and-rumble approach. With some gnarly time changes thrown into the mix, the band closed their set with mostly instrumental material, riffing their way until the very end.