For what it's worth there is also another MacCRimmon song based on the same legendary Piper MacCRimmon but the Itma database of "Irish" (sic) songs gives a totally different song of that name with a different tune.
Seldom heard now, my father recorded it on a 1967 album - not one of his own songs. I am unsure who wrote this one, seems in the 20th century idiom.

Piper MacCrimmon
The chorus goes something like.

"Lilting pipes are echoing eerily
- over mountain, valley, and glen.
Piobaireachd sounding - restlessly, wearily.
Piper MacCrimmon is haunting the glen".

It's a Scots tenor type of thing - and not one any folk singer would go for, but it shows how the same Piper inspired songs and tunes.