Prolific experimentalist Robert Aiki Aubrey Lowe returns to Demdike Stare's quietly impressive DDS imprint, some 12 months on from his last outing on the label. Like many of the modular synthesizer and analogue hardware-loving artist's albums, Levitation Praxis: Part 4 (we're not sure what happened to parts one to three) is made up of two long, meandering and hugely atmospheric pieces. Intriguingly, these both use a human voice - largely the improvisations of a lone female singer, which are in turns haunting and enchanting - as much as Lowe's usual droning sonic textures, gently throbbing synthesizer figures and outboard effects. The results are naturally hugely impressive, though we'd expect nothing less from the one of electronic music's most distinctive composers.