Hollow Hills by Davy Spillane

Has anyone by chance worked out and transcribed how to play Hollow Hills by Davy Spillane from the CD, Celtic Solstice by Paul Winter. See http://open.spotify.com/track/6Z6jnLLvAexsY4OxTIdI46. It’s a gorgeous solo piece for low whistle but even with software to slow it down, I’m really struggling to figure it out.

Can’t really help it but each time I see the title of this thread I think of Mary and Josie Nugent’s ‘Hills and Hollows’. Which, I suspect, has an altogether more feminine aspect.