A♭ Diminished Chord
The A♭ Diminished chord is a diminished chord built on the root note A♭. Its notes are A♭, B and D. It is enharmonically the same chord as G♯ Diminished.
Diminished chords sound unstable and suspenseful. Two stacked minor thirds create a tight, dissonant tension that composers use for passing chords, horror scores and dramatic turnarounds.
A♭ Diminished on piano
To play A♭ Diminished on piano, place your right-hand thumb on A♭, middle finger on B, and little finger on D. Press all keys at the same time and listen for a clear, balanced sound. Practice switching to and from this chord slowly, then with a metronome at a comfortable tempo.
A♭ Diminished on guitar
On guitar, A♭ Diminished is commonly played with the voicing shown above. If the chord contains barred notes, keep your index finger flat across the fretboard and curve the other fingers so they do not mute the open strings. Strum only the strings marked as active in the diagram for the cleanest tone.
Play the chord
A♭ Diminished chord notes
| Degree | Interval | Semitones | Note |
|---|---|---|---|
| 1 | Root | 0 | A♭(Ab) |
| ♭3 | Minor third | 3 | B |
| ♭5 | Tritone | 6 | D |
How to use the A♭ Diminished chord
The A♭ Diminished chord is built from a root, a minor third and a diminished fifth. Starting from the root A♭, stack the intervals to get the complete chord: A♭, B and D. Learning the formula is the fastest way to transpose the chord to any other key.
Diminished chords are passing tools in classical, jazz, bluegrass and film music. They are often used as vii° leading to the tonic or as chromatic passing chords between diatonic chords.
Common progressions
The A♭ Diminished chord works beautifully in these progressions. Click a chord name to jump to its page.
Scales that contain A♭°
These scales include A♭° as one of their diatonic chords. Use them to find melodies and improvisation ideas that fit perfectly.
Related chords to A♭ Diminished
Once you are comfortable with A♭ Diminished, explore neighbouring chords to unlock new progressions. The chords below share notes, keys or functions with A♭ Diminished and are a natural next step in your practice.
Frequently asked questions
What notes are in the A♭ Diminished chord?
Is the A♭ Diminished chord major or minor?
How do you play A♭ Diminished on piano?
How do you play A♭ Diminished on guitar?
What is another name for the A♭ Diminished chord?
Keep exploring
Deepen your understanding of the A♭ Diminished chord with our other music theory tools.