Wow, Alice, that is beautiful! I'll bet the acoustics were wonderful; there's just something about singing out in nature which just makes it all sound better and more magical, to me.One time, when we lived in a little hill town in Massachusetts, I had gone for a walk down a country road. It was a beautiful day, nature was glorious and suddenly it seemed out of the very aethers, I heard a faint crsytalline voice singing an aria from Mozart. At first I thought I was losing my mind, but when I listened more closely, I heard it again and was treated to my own private "Tanglewood" for about 20 minutes. I later found out from neighbours that some opera singer from NYC had a weekend/summer home there and was often heard practising.
all the best,
kat