Betimes Black Cloudmasses is the highly-anticipated second album from Vincent De Roguin (Shora), Stephen O'Malley (SUNN0))), KTL), and Daniel O'Sullivan (Guapo). Like their genre- and audience-confounding debut Deep In Ocean Sunk the Lamp of Light, Betimes is an atmospheric, constantly changing piece that encompasses a mind-boggling array of different performance and processing techniques. The deeply psychedelic and moving results present a soundstage that is continually evolving, with new elements entering and leaving the fray every couple of seconds. Betimes includes significant contributions from free percussionists Nicolas Field and Alex Babel, who sprinkle the sound field with an almost FMP-style rush of splattering drum sound, raising the intensity of the music (without resorting to bashing). The album also features a brief but affecting vocal from Ulver mastermind Kristoffer Rygg, who made his first live appearance in over a decade when Aethenor played the Roadburn Festival in April 2008.