Explosions In The Sky are curious sort of band. While their influence and legacy loom over the entirety of the post-rock genre, they for a long time represented the most pedestrian elements of one of the most compelling sub-genres in recent years. Their songs followed a typical format and structure that could be dubbed “squarewave”. It’s a form based around the contrast of the extremes of silence and noise, like a square waveform. Sparse, twinkling legato and staccato guitars lull you into a sense of tranquility, which is sharply interrupted by an onslaught of wailing guitars, crashing drums and thick…