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It might not be a coincidence that Katey Sagal’s most famous role saw her in a bouffant that Ronnie Spector would have given her eyeliner for; the former Peggy Bundy’s singing voice is riven with the same vulnerable shakiness. But while the Ronettes used it in the service of teenage longing, Sagal offers more of a weary acceptance on “Covered,” her third album (and first using all outside material). While the “Sons Of Anarchy” star takes on Jackson Browne, Ray LaMontagne and Steve Earle, Tom Petty’s “Free Fallin’” (here given a languid drum-machine beat before the earthy guitars kick in) is the only song most people will know.