Sandy Denny live in 1971 playing The North Star Grassman and The Ravens.
http://www.allmusic.com/album/the-north-star-grassman-and-the-ravens-mw0000620246.
view the original upload here: https://vimeo.com/61742904 More info: http://www.style.com/stylefile/2012/11/wren-a-songbird-joanna-newsom-lends-a-string/
The Hazy Maidens cover this beautiful title track from Sandy's first solo album. Julie McCann: Lead vocal Amy McCann: guitar, violin, backing vocals.