The or just indicates position, e.g. A is an A major, played in the first position , while A is also A major but played in the second position. Note that the first string is not played in any of the above chords. Since the first and second strings are tuned the same, if you want, you can fret the first string the same as the second and play it. >From listening to the recording, I think the two guitars play as follows: verses: guitar 1: A - B - D guitar 2: A - A - A Here guitar 2 is p (chordiearchive.chordie.com)