Wow - Just WOW.
on the original tape there was also a recording of a performance of a lost piece of Gwydions work.
Circa 1980's, in association with the Curch Of All Worlds he published a booklet titled "the Rites Of Summer".
He also performed the piece along with some other festival participants at that Pan Pagan 1980 event.

I have put that performance up in the MP3 player.

I hope you enjoy listening to it.

here is the "Trees of Annywn" cut from that performance.