Raised on Cape Cod, the Parkington Sisters–Lydia, cello; Rose guitar and piano; Ariel, Sarah, and Nora, violin and viola–started singing together only six years ago. Imagine the McGarrigles or Roches as a vocal-harmonizing chamber string ensemble. Leonard Cohen and Joni Mitchell, meet Shostakovich and Stravinsky. Although Lydia’s not on this tour (with the Dropkick Murphys), the other four sisters will enthrall, live in the studio, with original songs from the new CD, Till Voices Wake Us, and more.