Naming a band after a seminal American rock ’n’ roll song might be asking for trouble, but Britain’s Peggy Sue is fearless; it also brazenly siphons American music out of its native habitat and gives it a new pot to brew in. Longtime friends Rosa Slade and Katy Young (along with drummer Olly Joyce) use everything from accordion and ukulele to trumpet and mandolin as they reshape what's essentially stark and unsettling Americana folk. Using their impressive vocals as the centerpoint, Young and Slade create harmonies that build like storm clouds and melodies that circle and swoop with sensuous fervor. They cover topics like crushed affections, physical desire, and death; it’s a sour Appalachian mash that feels like PJ Harvey crossed with She Keeps Bees’ Jessica Larrabee. The centerpiece track “The Watchman” stealthily creeps along with an ominous snare drum atop a bluesy rhythm. Some minor-key guitar work thrums below, before it reaches an early eruptive coda and then quietly retreats. Beauty.