“When Rustie spoke with us last year around the time he unleashed his astounding BBC Essential Mix, the Glaswegian producer claimed the music he'd been making since 2011's Glass Swords, was "sort of classical," while offering the caveat that most of it would get chopped up for "club tracks" in the end. So it only takes one listen to "Slasherr", the B-side to Rustie's forthcoming single for Numbers,”