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D-flat Diminished Chord
The D-flat Diminished Chord is D-flat, F-flat, and A-double-flat. On the keyboard, that's D-flat, E, and G: a black key under the thumb and two white keys close above it. The spelling is unusual, but the shape is compact and simple, and the sound is tense, leaning toward D.
How to play the D-flat Diminished Chord on the piano
Let’s go through some charts that will familiarize you with the D-flat Diminished Chord and how to play it in the various forms you will encounter in pieces of music. First, we’ll look at the fundamental chord and its inversions; then, we’ll explore some more complex voicings.
The D-flat Diminished Chord in root position
In root position, the notes of the D♭ diminished chord are stacked in thirds with D♭ on the bottom. The appearance on the staff is evenly spaced, as is the feeling of the space in between your fingers while playing.
| D-flat Diminished Chord in root position | |
|---|---|
| Note Order | D♭ F♭ A𝄫 |
| Left Hand Fingering | 5 3 1 |
| Right Hand Fingering | 1 3 5 |
| Chord Symbol | D♭dim or D♭° |
The D-flat Diminished Chord in first inversion
In first inversion, the third of the chord (F♭) becomes the bottom note, and the root (D♭) jumps up to the top.
| D-flat Diminished Chord in 1st inversion | |
|---|---|
| Note Order | F♭ A𝄫 D♭ |
| Left Hand Fingering | 5 3 1 |
| Right Hand Fingering | 1 2 5 |
| Chord Symbol | D♭°6 or D♭°/F♭ |
The D-flat Diminished Chord in second inversion
In second inversion, the fifth of the chord (A𝄫) is on the bottom, and the third of the chord (F♭) goes to the top.
| D-flat Diminished Chord in 2nd inversion | |
|---|---|
| Note Order | A𝄫 D♭ F♭ |
| Left Hand Fingering | 5 2 1 |
| Right Hand Fingering | 1 3 5 |
| Chord Symbol | D♭°6/4 or D♭°/A𝄫 |
D-flat Diminished Chord theory and function
A diminished chord stacks two minor thirds, and the result is tense and unsettled. It is never a place to rest. It behaves like a dominant 7th chord with the root missing, so it wants to move.
The common keys that use this chord are sharp keys, so it is usually written as C♯ diminished, and the spelling follows the key. The C♯ diminished chord is the leading-tone chord (vii°) in D major. In minor keys, it is the leading-tone chord (vii°) in D minor and the supertonic (ii°) in B minor.
The notes C♯, E, and G are the top three notes of A7, so the chord leads to D the way A7 does. A common use is as a passing chord over a rising bass line, I – vii°6 – I6: D – C♯°/E – D/F♯, so the bass walks D, E, F♯. Try playing C♯° and then D and listen to how the tension settles.
Other chords built on D-flat
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