I've seen D9 on a guitar expressed as
D A D2 E2 A2.
So I see no 3rd and no 7th. I've seen some topics talking abouth 12th and voicing, but still have no idea what that is all about and how it works.
Could someone enlighten me, please?
The chord tab as played:
e|-5- (A)12th b|-5- (E)9th G|-7- (D)8th D|-7- (A)5th A|-5- (D)1st E|-x-