I have it, Ewan. It's wonderful. I got a very good condition copy through a used book website on the internet. It is beautiful, right next to my computer keyboard, and I read it often for the lyrics and her notes about the songs, history, how she learned them, her experiences relating to the songs,etc.
The book came with a newspaper clipping in it about Mary O'Hara that the previous owner must have left between the pages. The clipping is from the Echo, dated 7.5.93, about a benefit concert she gave to help the Sue Ryder Home raise money for the Leckhampton Court home in Church Road, Leckhampton.