[Yo-Yo]

Are you sure it isn't Boxcar Willie?

[SunkenCiv]

Nope, 's Fahey.

Here's a really lousy midi version by some other guy:

http://members.fortunecity.com/ajsmidi/alpcond/alpha_12/midi/lastrain.mid

found a video by still another on YouTube:

http://www.youtube.com/watch?v=Mimmm2bubaQ

Chris Proctor did a great version on "Under the Influence":

http://www.chrisproctor.com/cpproducts.html

Leo Kottke recorded it on "Greenhouse".