About ten years back I heard a recording by a fellow whose name now slips my mind ... an American, though, and I say that b/c the "gum tree" sounds Australian to me, and I think there's an Australian version of the song in the Digital Tradition.I'm looking for the American version, though.
Chorus:
Roll away, roll o'er the water so blue,
Like a feather we'll float in our gum-tree canoe
(this repeats again).
A broad range to the tune; I think it was over two octaves.
Anyone?