Well, since everyone here is putting up and ducking I may as well too.

A fiddler often learned a tune on a small number of hearings and then worked it out on his instrument as technique and memory allowed, then others learned from him. Like oral (aural) tradition with a ballad tune, it changed, often becoming quite different from its original source. So call it "Forest Rogers' Polka" and be done.

And Guest, I did know Norman Cazden, but that doesn't help here.

Now I'll get out of the way...