It’s kind of a coup for Music City Roots to snag Alejandro Escovedo. He’s a keen roots-rock talent who’s spent his 35-year career gathering devotees and critical accolades ever so slightly below the mainstream radar. His background alone is enough to make him worth talking about: He’s got punk rock bona fides (his band opened for the Sex Pistols in 1978), a legit claim to fathering the alt-country movement (he co-founded the Austin cowpunk outfit Rank & File) and an impressive bloodline (brothers who played in Santana and a niece who turned pop star after backing Prince). Then there’s his music, the fruit of a restless intelligence that can travel from twang to New Wave at the speed of light. Escovedo’s latest, Big Station, is generous with the punchy, buoyant hooks and horns and even gives a nod to his Chicano heritage with a romantic bolero.