This is a tune from Manon Campbell. The recording is short, and he doesn't play it consistently with the extra beats, so I had a hard time figuring out exactly what he was going for.
I also have a field recording of David Lynch playing it. In that recording, he plays the A part four times through instead of three, and he reverses the phrases in the B part.
In Jeff Todd Titon's Kentucky Fiddle Tunes book, his transcription shows the A part played three times, and the two phrases of the B part to be identical. This transcription is closer to the recording on Slippery Hill.
So, I had to take a bit of creative licence with this one. I hope my end result is what Manon Campbell intended. I settled on AAAB, with the phrases in the B part reversed from the David Lynch recording.
Here's my arrangement/transcription:
Backup + Melody: