A singer friend of mine has a book of Burns songs from the turn of the century. I looked "Parcel of Rogues" up in it and it gave the words and listed the tune as "Parcel of Rogues" (or "Such a Parcel of Rogues - I can't remember exactly). For other songs iot gave the name of the tune if different from the words. From that I gather that at least according to that source the tune goes with the words, although I'm not aware that Burnas actually wrote tunes. So it's confusing. Denis