Enigmatic entity 3:33 preceded this with an album of rap remixes, so no wonder people peg their noise-beat experiments as "underground instrumental hip-hop." Tracing a sonic-boom lineage back to Dalek and Brooklyn Beats Records makes sense. But however you file it, their distorto-dystopian repetition fills the atmosphere, and at its most clatterful ("Pt. 4," "Pt. 6," machine-tooled "Pt. 7") pounds through the ozone layer. Closing composition "White Room" is a 41-minute endurance test or nerve-calming background sound for people comforted by angels bowling and bad-dream monastery transmissions.