I agree with the post above. I played this tune as a bass player at festivals for years. So I had the tune in me long before I tried it on the bass. And furthermore, I tried it on the bass many times and thought I couldn't get a piece of it so I just gave up. Then I got a recording recently by French Carpenter and there the tune was again. He played it with two parts but hearing it helped me assemble it in my head and then on the bass. Of course, it doesn't sound too good at first. You've just to take it phrase by phrase and see if you can get any of them happening.
A lot of it has to do with the bowing and phrasing as you can see when these tunes are written out they look very childlike. Sorry about the two clef thing, I hope that isn't throwing you off. There is a pulse or swing that keeps the damn thing in the air so try to practice that simple shuffle a bit. I could make you a super slow file and send it to you?
I found a free download here:
http://music.download.com/morgantownrounders/3615-8240_32-100620010.html