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 ...

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 ...

All the chords built on other notes in the scale of C are minor, except chord VII - the notes B – D – F, which is diminished. When a seventh is added to a chord this is known as a seventh chord.