Tune Over the Road to Maysville
John Hartford tells a story associating this tune with a tobacco market in a town called Maysville but I don't know which of the several towns with that name he means.
I learnt it from Jock Tyldesley and Vera van Heeringen. The A♭-G in the 7th bar of the B part, written here as two eighth-notes (quavers), could be played as a quarter-note (crotchet) slide from A♭, or even A, downwards as far as sounds right to you. I haven't worked out how to notate that in ABC though.
Generating the image...