Categorizing the Legendary Pink Dots is a fool’s errand. Led by multi-instrumentalists Edward Ka-Spel and Phil Knight, the long-standing ensemble has dabbled in whatever musical element hooves into their collective view. Over their nearly 40-year existence, that has included excursions into neo-psychedelia, industrial rock, ambient, or arch pop punctuated by bursts of raw noise. On the group’s latest album, Angel in the Detail, the Dots set the wispy vocals of Ka-Spel and his philosophical lyrics over a synthetic backdrop that evokes the throbbing allure of the dance floor or the drowsy visions of an opium den. by Robert Ham