This track is my fav on An Ancient Muse so I was delighted to find this just now:

http://www.youtube.com/watch?v=2Be3wFQfYCM&feature=related

Someone has done a fine job of researching & explaining this with an EXCELLENT presentation. Well done, well done!

Thanks for the link, it was wonderful. I love love youtube! Not as much as Loreena!!!
Peace and beauty,
Gina