This "air" appears on Hamish Moore's Dannsa' Air An Drochaid (Stepping on the Bridge) played on the piano. He lists it as traditional, but also as one of his favourite Burns songs.

For you Canadians, it seems to be the same tune used for Scarborough Settler's Lament (A. Glendenning, 1840) as sung by Stan Rogers on For The Family, although Stan didn't use some of the Scots words found in the original. The words used by Stan are in the database, I believe.

Question:
Am I right in assuming that the melody is traditional, and the Burns words written for it?
Secondly, does anyone have an ABC or know where a MIDI can be found? (This part is for someone else, not me)
Thirdly, what are the lyrics to the Burns song? They don't seem to be in the database and I don't own any Burns songbooks.