On his latest set, “Lucky Ones,” Pat Green takes a look at adult relationships. Leadoff cut “Baby Doll” (a co-write with Rob Thomas) is a sharp slice of life, boasting slick hooks, layered background vocals and a John Mellencamp vibe. Green conjures some effective imagery and a romantic perspective, spiced with nifty Lisa Germano violin work, on “Don’t Break My Heart Again,” and turns in a soulful vocal performance on “My Little Heaven.” While themes are generally more mature throughout, he can’t resist having a lil’ fun (“College” with Brad Paisley). But Green is generally in a romantic mood here, with a pair of Radney Foster co-writes in the humble title cut and “It’s Time” perfectly capturing the hope and optimism of marriage, before and after. He wraps things up with the spooky “Sweet Revenge,” a brewing storm of a song (written with Ray Wylie Hubbard) that sports an endearing mean streak.—RW