I think it's been probably a couple of years since I played this one, although I can't remember for sure. I know I ran through it a few times since the album came out in 2003, so I have a basic idea of how to play it.
The song is in the key of A major, so for guitar purposes if you place a capo on the 2nd fret, essentially every chord is dropped a whole step. In other words since the first chord is "A", with a capo at the 2nd fret you would play a "G". The 2nd fret, then, is your open position and the G is played relative to that still sounding a concert chord of "A". So just keep that in mind if you arrange this song for a capo. I'll list the progression in the concert key of A. I'll point out that the banjo is probably tuned in an open A tuning or in open G with a capo as well, but I'm not going to try to fully transcribe that part either for banjo or guitar, as I don't own a banjo. I will mention however, that the NBFD CD has a separate song with just the banjo mix (rhythm guitar parts dropped out) that might be easier to listen to for figuring out the banjo part.
INTRO.
Starts with banjo only. Chord progression is:
A-A7-D-D#dim7(or E7)-A-Ab7-G7-F#7-B7(or D7)-E7
I'll mention that the quality(major/minor or inversions) of the chromatic descending chords may vary, as alterations or extensions can be used to spice up the line.
At this point drums enter and then the guitar comes in with a riff that is something like this:
C-C#-C-B-G bend-A-G#-G-D/F#-E-A
This is the bass line from the 5th and 6th strings, and in between each bass note chordal arpeggios of the A chord are played. D/F#, E, and A chords end the riff.
VERSE/CHORUS
A-F#m-D-A
A-F#m-D-E-E7
A-A7-D-E7(or Ebdim7)
A-Ab7-G7-F#7-B7(or D7)-E7
That's basically all there is to the song. The guitar solo is over the entire VERSE/CHORUS form and is in A major, with attention paid to each chord in terms of scalar runs and scale changes. The song ends on a B7(or D7)-E7 change that repeats a few times followed by the chords of A-D-E7-A-G-A with fills between the chords.
Again feel free to post any comments/corrections etc.