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D Half-Diminished 7th Chord
The D Half-Diminished 7th Chord is D, F, A-flat, and C, with just one black key under the third finger. That A-flat is the note that separates this chord from D minor 7th, and it's where the darker, more searching sound comes from. Let's keep the third finger a little forward so it reaches the black key easily.
How to play the D Half-Diminished 7th Chord on the piano
Let’s go through some charts that will familiarize you with the D Half-Diminished 7th 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 Half-Diminished 7th Chord in root position
In root position, the notes of the D half-diminished 7th 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 Half-Diminished 7th Chord in root position | |
|---|---|
| Note Order | D F A♭ C |
| Left Hand Fingering | 5 3 2 1 |
| Right Hand Fingering | 1 2 3 5 |
| Chord Symbol | Dm7♭5 or Dø7 |
The D Half-Diminished 7th 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 Half-Diminished 7th Chord in 1st inversion | |
|---|---|
| Note Order | F A♭ C D |
| Left Hand Fingering | 5 3 2 1 |
| Right Hand Fingering | 1 2 4 5 |
| Chord Symbol | Dø6/5 or Dm7♭5/F |
The D Half-Diminished 7th 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 Half-Diminished 7th Chord in 2nd inversion | |
|---|---|
| Note Order | A♭ C D F |
| Left Hand Fingering | 5 3 2 1 |
| Right Hand Fingering | 1 2 3 5 |
| Chord Symbol | Dø4/3 or Dm7♭5/A♭ |
The D Half-Diminished 7th Chord in third inversion
In third inversion, the seventh of the chord (C) is on the bottom, and the fifth of the chord (A♭) goes to the top.
| D Half-Diminished 7th Chord in 3rd inversion | |
|---|---|
| Note Order | C D F A♭ |
| Left Hand Fingering | 5 4 2 1 |
| Right Hand Fingering | 1 2 3 5 |
| Chord Symbol | Dø4/2 or Dm7♭5/C |
D Half-Diminished 7th Chord theory and function
The half-diminished 7th is a diminished triad with a minor seventh, and it is a softer kind of tension than the fully diminished chord. It is the ii chord of minor keys and the vii chord of major keys, and it usually leads to a dominant.
The D half-diminished 7th chord is the leading-tone chord (viiø7) in E♭ major. In minor keys, it is the supertonic (iiø7) in C minor.
The pattern to know is ii – V – i in a minor key. In C minor that is Dø7 – G7 – Cm. The notes are also a minor 6th chord in inversion: Dø7 contains the same four notes as Fm6, which is why theory books sometimes describe it as a minor triad with an added sixth. Try playing Dø7 and then D°7: the two chords differ by a single note, and it is worth hearing how much that one half step changes.
Other chords built on D
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