Eric Hofbauer/Dylan Jack, Period Pieces (Creative Nation Music) This Boston quartet has conjured up a triumph. Hofbauer’s slurry acoustic guitar, Jerry Sabatini’s intrepid trumpet work, Tony Leva’s acoustic bass and trippy electronics, and Jack’s wonderfully musical drumming meld into a flowing suite of improvised pieces that move through spacey free improv, smoldering funk, warped bop,...