Source: Caoimhin O’Raghallaigh’s "Where the One-eyed Man is King." He plays it in Eb which is G on a Bb whistle which is one of the things he plays on the track. It is a very interesting album if you haven’t heard it.
You’d do yourself a major service if you look up Willie Clancy’s version of it. He plays it on a Bb whistle on a folktrax recording, and if you know who to ask, on a B set of pipes, too.
I should add that there are some errors in the transcription, but I’d been meaning to write up willie clancy’s version… maybe one of these days.