Zeitgeber is a project that sees Lucy and Speedy J exploring roots and limits. The duo have both indulged their experimental sides from time to time. Perhaps most notably Speedy J with his mid-'90s run on Novamute, and Lucy on his 2011 full-length for Stroboscopic Artefacts. But Zeitgeber is something more, with two artists pushing each other to go further. As a precursor to the forthcoming album, it's a perfect taster of the uncompromising sounds yet to be heard.