Sean Douglas established his pop appeal early in his career: He penned Demi Lovato's passionate smash “Heart Attack” and collaborated with Jason Derulo on the skronky “Talk Dirty” and the slinky party-starter “Wiggle.” His work with country heartthrob Thomas Rhett shows how his talents work in any genre; “Die a Happy Man” is a slide-guitar-assisted devotional, while the funky “I Feel Good” invites the MC LunchMoney Lewis into the honky-tonk.