One solo track by each artist, plus a fourth three-way collaboration. The fluid and propulsive “Sarrogate For Mass Murder” is impossible to mistake for any artist but K2, with its shuddering-soaked layers of frenzy. CONSTRAIN delivers blasts of harsh electronics and static assault textures on “Recognizable Mask.” Electronics meet glass smash on FENIAN's “Phenomenology,” where unrepentant harsh noise careens across multiple lanes of blacktop. The brain-bending collaboration track “Spreading Particles Go Smokey” overflows with petulant dissonance and repeated lightning strikes of shuddering rubble blasts. A pristine surge assault of cut-up harsh noise protocol.