On 2010's Tiger Suit, KT Tunstall partially obscured her rocker-chick heart behind crossover-pop production. This 2007 Christmas EP shows how much Chrissie Hynde influenced her, with the note-for-note cover of The Pretenders' "2000 Miles." Tunstall toughens up the oldie "Christmas (Baby Please Come Home)" and charms on an acoustic reading of "Mele Kalikimaka." Tunstall also revives The Pogues' heartrending "Fairytale of New York," with British brooder Ed Harcourt taking Shane MacGowan's place. "Lonely This Christmas," a cover of a glam-rock obscurity by Mud, ends things on a haunting note.