Review: The Canadian post-rock instrumentalists return with a demand for revolution, soundtracked by just shy of 45 minutes of orchestral aggression. As with all of their work, GY!BE convey their ideas articulately through evocative wordless music. The opener, 'Undoing a Luciferian Towers' sets a tone for the album with a monolithic and militaristic march. Passages of feedback open out into anthemic expanse on the three parts of 'Bosses Hang'. 'Fam/Famine' balances between harmonic assonance and dissonance, ramping up the tension before the final triptych 'Anthem Of The State' takes a more optimistic tone, with the movement away from noise providing some glimmers of light in the abyss. 'Luciferian Towers' is an impeccable and polished record, and possibly Godspeed You! Black Emperor's finest to date.