That object in David Krakauer’s hands is, of course, a clarinet; it is also a mage’s wand that makes jazz, hip-hop, funk, electronica, cantorial cries, even stuffy chamber music spring to their feet, join hands, and dance a freylekhs. Here, with a band that includes sampler maven Keepalive, this alumnus of the Conservatoire de Paris returns to his old stomping grounds. —E.E.