Thanks for that. I'm familiar with the story of St Kilda. I read Life and Death of St. Kilda: The Moving Story of a Vanished Island Community years ago. (I didnt remember author's name but have just looked that up - Tom Steele). And a bit more recently I went to a slide show/lecture by someone who had been on a National Trust work party at St. Kilda. But this is the first time I've heard about the "Lost Songs of St Kilda"; it's fascinating that the tunes were recorded off a man in a care home who had learned piano from a former resident of St Kilda.

One thing I always remember from the book was that the islanders had very high infant mortality until a nurse convinced them not to use bird dung to seal up newborn's umbilical cords. The infants had been contracting infections. And when I think of St Kildan's I think of them nimbly scaling cliffs to plunder sea bird's nest. There's also a story I don't think was in the book but which I heard at that talk in the Isle of Skye; about the aristocratic lady whose estranged husband exiled her to St Kilda. You can get further info. on line re Rachel Chiesley aka Lady Grange - on Wikipedia, at http://www.secretscotland.org.uk/index.php/Secrets/LadyOfStKilda ,
http://www.transceltic.com/scottish/remarkable-story-of-imprisoned-lady-of-st-kilda, etc and I see there is a book by Margaret Macaulay
The Prisoner of St Kilda; The True Story of the Unfortunate Lady Grange Luath Press, 2016