I'm very curious about this longer version of Red Staggerwing:)
The only difference is that the tempo of this version is a bit faster than the one released in the Emmylou record.
"Donkeytown" is a totally different version, nicer than the one released in my opinion.
The rest of songs are in most cases different takes, very similar than the one released, but when you know the record bit by bit, you notive little things here and there, but nothing extraordinary.
Before you ask, I don't have it, but I was lucky enough to met someone with a copy that let me listen to it, the promo cd is extremately rare and difficult to find.