Best known as the relentless guitarist for avant-metal duo Orthrelm, Mick Barr, who has contributed to nearly 40 releases, works under many aliases. His debut for Hydra Head as Ocrilim, a word he describes as “thoughts” instead of actions, is a remarkable 80-minute blast. Through seven movements of Barr’s unmatched and over-thought technique, Annwn bears the mark of high art. Unlike the calculated irony of The Fucking Champs or the schizophrenic skronk of Hella, Barr’s layered guitar-work draws from the intensity of free jazz and the mechanization of electronic music. Remarkably intense and unconcerned with the outside world, Annwn is a mind-blowing listen.