Bluegrass In The Backwoods
Composed by American fiddler Kenny Baker (1926 - 2011), seems to be quite a few recordings of this one, usually a fiddle tune. Stumbled onto the tune through Mhícheál Ó Riabhaigh’s piping album " Tiomnacht (Handed On)".
There’s an intro, then the 4 parts in this setting. It goes something like this:
Intro -> ABCD -> ABCD -> AB (instead with the 16th bar of the B ending with one low-D).
Patti Kusturok @ ~ 30s: