In "Day-O," Harry sang:

Hill and gully rider, hill and gully,
Hill and gully rider, hill and gully,
Day-o, day-o, daylight come and me wan' go home....

The rest of Day-o never mentioned "Hill and gully rider" again.

Maybe he borrowed the hill and gully stuff from another song (Harry did go to college in NYC, and was hip to the American traditional folk songs before concentrating on calypso and developing a Caribbean accent. I played music in the West Indies for six years and picked up a lot of calypso. West Indians love Harry, but they know he's from stateside).

Mark