London Zoo

Kevin Martin, under a dozen-or-so aliases and across numerous genres, has been screwing around with deep bass for well over a decade. 1997's Tapping the Conversation-- a concept album conceived as a surrogate soundtrack to Francis Ford Coppola's The Conversation-- was his first release as the Bug, and in retrospect, it sounds like an alternate-universe prototype of dubstep, based on instrumental hip-hop rather than UK garage rhythms. By the time he issued his 2003 follow-up Pressure, he'd already charged headlong into heavy digital ragga, building a repertoire of grimy, distorted beats that mutated dancehall into a glitchy, blown-out commotion.