Having introduced 5 chord shapes for DADGAD tuning, let's turn our attention to open D (aka D A D F# A D). As with DADGAD, drop the sixth string down a tone to D, then drop the first and second ...

In blues ‘dominant’ 7 chords (A7 or D7 for example) are more common than basic major, minor and sus chords. The A7, D7 and E9 ...

The 9th (D) is provided by the open first string. Play a regular C chord and you’ll get Cadd9. The 6th (D) appears on the open fourth and first strings here, giving this chord an unusual feel ...