September 6. New folk light Laura Marling traded her rainy British homeland for the smoggy air of L.A., leaving most of her backing band behind for the recording of her fourth and latest long-player, Once I Was an Eagle. Though decidedly sparse when compared to her previous albums, the disc, supported by this evening at the Bearsville Theater, has Marling flavoring her wandering, waifish Joni Mitchell influences with those of the hippie acoustic-psych aspects of vanguard U.K. acts like Pentangle, Pink Floyd, and Led Zeppelin. (Todd Clouser and A Love Electric sparks September 8; Aztec Two-Step walks on September 20.) 9pm. $25, $35. Bearsville. (845) 679-4406; Bearsvilletheater.com.