The foreboding synth experimenter Laurel Halo named her new EP Behind The Green Door after a famed ’70s porn movie, and the latest track she’s shared from it is called “Sex Mission,” so maybe there’s a theme developing here. Or maybe not; the eight-minute “Sex Mission” — like “Throw,” the last track she shared from the EP — is a rigid mechanical pound, with nothing sensual about it. If these tracks are about sex, they’re about a particularly harsh and robotic form of it, which is maybe the point. Or maybe this is just the coldest house music anyone ever made. Listen to “Sex Mission” at NPR.

Behind The Green Door is out 5/21 on Hyperdub.