The inimitable Godspeed You! Black Emperor returns with another soundtrack for our times. As the heretical anarcho-punk spirit of the title implies, Godspeed harnesses some particularly raw power, spittle and grit across two riveting 20-minute side-length trajectories of noise-drenched widescreen post-rock: inexorable chug blossoms into blown-out twang, as some of the band’s most soaring, searing melodies ricochet and converge amidst violin and bassline counterpoint.