Continuing to blaze a trail as a poll-winning clarinetist and far-sighted bandleader, Cohen delves into the wealth of ideas summoned by Lev-Ari on “Triple Helix”: classical and contemporary sounds, Americana lyricism, Latin and Middle Eastern rhythms and more. The clarinet trill at the outset hints briefly at Rhapsody in Blue, subtly proposing a 21st-century perspective on Gershwin’s model of hybrid-genre works for the concert hall. The Tentet has grown from workshops at Shapeshifter Lab in Brooklyn to multi-night runs of rousing club experiences at the Jazz Standard in Manhattan as well as high-profile engagements at the Newport, Monterey and SFJazz Festivals.