It is familiar...perhaps a Loreena McKennitt song? I can almost hear bagpipes playing it in my head, though. Hmmm.
I would look into Loreena's music and see if you can find it there, and I'll keep my "ears open" since I listen to Celtic music all day and if I hear it, I'll be sure and let you know!
Slàinte mhòr agus a h-uile beannachd duibh!
(Good health and every good blessing to you! -- Scots blessing)
Victoria Dunn, author writing under the pseudonym Ria MacAlister