Dark Arts is not the most high-profile techno series, but it continues to yield some great results. 'Debris' revolves around a muscular Detroit rhythm, while both takes on 'Black Science' are more stripped back. In particular, the skipping rhythm and menacing chord sequences of 'Black Science (Version)' see Crosbie dispense with the conventional techno framework and venture into an abstract approach. The same can be said of 'X'. Here, Crosbie gradually adds layers to a stepping, percussive groove until it implodes in an acid sunburst, in the process reconciling the cerebral with the functional.