Robert Willim (aka Selko) has followed up his group field trip with a solo excursion. The IC1 – The Birth of Industrial album, which he organized, featured musicians crafting electronic tracks from a shared set of samples, all of which originated at a sugar refinery in Sweden. Among the participants were Scanner, Tonne, Pheek and Rechenzentrum. Now, as a free online follow up to that proper CD release, Selko has posted a four-track virtual EP, Refinery, each track “mainly based on” sounds from that same locale, notably the pneumatic jitter that gives “Sucrose” its underlying anxious jolt. “Shelf Life” likewise maintains a steady, antiseptic beat that one can easily identify as “industrial,” while “Chocolate Rework” and (to a lesser extent) “Microcrystalline” purposefully devolve into some more concerned with space and texture than with rhythm and song structure, and they’re alive with buzzy hive activity. Check it out at pleazure.org/selko.