Thanks for posting those links,
Gwathagor. They are beautiful and I enjoyed them very much.
Yet they don't work for me. I've done too much Scottish dancing and listened to too much music from Cape Breton (Nova Scotia) for me to be able to identify that with the elves. It is still primarily, to me, Celtic, the music of the race of men. I need something altogether more otherworldly, without the historical cultural signifiers, which is why I like
Norgrod's suggestion of something beyond our usual musical repetoire.
There's a tradition of healing music in Japan, using the Zen bamboo flute (the Shakuhachi), which also to me sounds like something the elves would get into. But I don't imagine many Downers would second me on that.
