Stefan Betke, aka Pole, made three brilliant albums between 1998 and 2000, each of which offered variations on a unique but highly influential sound. His vision of techno — for that’s what this is, sort of — is built on a foundation of deep, almost womblike dub bass lines, but actual beats are mostly absent. The surface of the music, meanwhile, is made of layers of static, soft hisses, and tiny glitchy pops, like amplified vinyl crackle raised to the level of a compositional element rather than a byproduct of playback. This isn’t music you dance to; rather, it embraces the methods of dance music in order to induce a trance state in the listener.