Hi,which particular bit of the tune were you looking for? As the others have said , most of it is spoken apart from the devil's (guitar)solo, and Johnny's (fiddle) solo.
The only singing bit that has a tune is the "fire on the mountains....." bit
I tried to work it out for a band one time, ended up just giving them chords, and saying listen to the track and try to make those fit!
good luck
Slainte
alison