Palus Somni are back with their 10th series of full-moon collaborations. “Shadows Over Sand” was recorded 2017/2020, and completes the duo’s first cycle of 60 albums. The six releases presented here show the group revisiting harsh noise, with an emphasis on looming drone, repetition, “primitive”-style microphone feedback, and occasional bubbling synth swells. Traverse the shaded craters of a cold, distant moon. All proceeds will be donated to Black Lives Matter.