Ddim 7-string bass chord

How to play Ddim on 7-string bass

The most common way, the first shape above: your index finger on the G string at the 1st fret and your ring finger on the C string at the 2nd fret. Let the D and F strings ring open. Don’t play the B, E and A strings.

From the B string x x x 0 1 2 0 (x: not played, 0: open)

What notes are in Ddim?

Ddim, D diminished, is D, F and A♭: the root (D), the minor third (F) and the diminished fifth (A♭). Its formula is 1 ♭3 ♭5.

What is the difference between Ddim, Dm7♭5 and Ddim7?

Ddim is three notes, D, F and A♭. Dm7♭5 adds the minor seventh, C; Ddim7 adds the diminished seventh, C♭, a half step lower.

Where does Ddim go?

Most often up a half step, to E♭: it is the chord on the seventh note of a major key, leading back to the tonic.

Keys with Ddim

Ddim is the vii° chord in E♭ major and the ii° chord in C minor.