Just to correct myself on the earlier post...

Ooops! I just heard the tell-tale standard D chord hammer-on which is impossible in Open G. I was wrong! It is capo 3, standard tuning, but funky voicing. The chords are inversions, which is why they don't sound like the recording if you play the regular chords. Here's the intro:

D A sus2/4
e |-----0------|-----0-----|
B |-----3------|-----3-----|
G |-----2------|-----4-----|
D |-----4------|-----2-----|
A |-----0------|-----0-----|
E |-----x------|-----x-----|

My first try at some semblance of tab.

Ken

For some reason the chord headings keep jamming up on the left, so I'm leaving them off this time. The below is meant to represent a D chord then an A sus 2/4 chord.

e |-----0------|-----0-----|
B |-----3------|-----3-----|
G |-----2------|-----4-----|
D |-----4------|-----2-----|
A |-----0------|-----0-----|
E |-----x------|-----x-----|

Ken