"Ossian" - "Dove Across The Water". Iona IR004.
I think it is also on a compilation "Best Of Ossian" or something similar. You could very probably get it from "Foot Stompin", Simon Thoumire's website.
The music for it is in "The Gow Collection Of Scottish Dance Music".
Composed by Neil Gow, it's in the key of "A" in the book, but "Ossian" played it in "G", which was better for the flute.
Could be Scotland's motto! Good Luck!