“The birds remind me of what remains,” goes the haunting refrain of the lead song from 2009’s Immolate Yourself, reprised here three years after the death of TTA’s Charlie Cooper. Pairing lush synths and shuddering electro grooves, it’s a reminder of the duo’s careful balance of atmosphere and force. Ellen Allien’s remix takes us to a heaving, wee-hours dance floor, while Matthew Dear’s boasts his woozy, bass-heavy touch. On “The Sky Is Black,” Josh Eustis contemplates life without his bandmate in stark electronic textures.