I came to this thread to work out how to phrase this line/these lines as an instrumental air:
Ba bhachallach péarlach ó dréimreach barrachas a carnfholt craobhach ag titim léi ar bhailechrith.

The reason for this is that many slow airs - especially, it seems to me, when played by pipers - suffer from ornamentation overload and resulting loss of clarity about the underlying melody.

But this seems just as awkward with the lyrics as without!