i was just looking for an easy way to play this song, and this is what i came up with.

when you play "o're the land of the free", you jump to a G if you're harmonizing 
with a Bb. otherwise, stay on a D

CAPO ON THE FIRST!!!!

D (xx0232@1)GOh (320003@1)say can you see, 
                  D (xx0232@1)by the dawn's early light,
        G (320003@1)          D (xx0232@1)            G (320003@1)
what so proudly we'd hailed, at the twilight's last gleaming?
D (xx0232@1)         G (320003@1)                
Who's broad stripes and bright stars, 
                Dthrough (xx0232@1)the perilous fight,
         G (320003@1)           D (xx0232@1)             GO're (320003@1)the ramparts we'd watched were so galantly streaming?
                    D (xx0232@1)                          CAnd (x32010@1)the rockets red glare, the bombs bursting in air,
     G (320003@1)               Dgave (xx0232@1)proof through the night, 
         Gthat (320003@1)our flag was still there.
D (xx0232@1)name="chord_320003@1">G             C (x32010@1)           D (xx0232@1)         
O say does that star spangled banner yet wave
         G (320003@1)         D (xx0232@1) Go're (320003@1)the land of the free___,
        C (x32010@1)     D (xx0232@1) Gand (320003@1)the home of the brave?