To help celebrate my son turning eighteen, May provides musical titles reflecting the transitory disorder known as adolescence. From cozy show-stoppers THE PAINS OF BEING PURE AT HEART’s cavalier, “Days of Abandon, to indie-rock iconoclasts “SLEEPY HAHAS’ unbridled thrill-ride, “Dull Days,” childhood’s end send conflicting signals. Add sharp-witted PAPERCUTS’ civil pillow-pop missiles, “Life Among the Savages,” and multifaceted jazz stylist BRIA SKONBERG’s encyclopedic, “Into Your Own,” and growth promotes hope.