Elliott Sharp may sometimes be characterized as a cellular composer, but he is by no means a cellular thinker. Rather, he seems to conceive of things in large swaths of creation, only then removing skins and reconnecting veins until each organism revives by means of unexpected blood flow. The Boreal collects four somewhat recent examples, of which the 2008 title composition, performed here by the JACK Quartet, employs awesome extended techniques, including bows strung with springs and ball-bearing chains, in addition to standard hair. But through this recording it’s not so much the craft as the art that shines. Like