Abdim7 Guitar Chord | Play, Hear and Practice Interactively
If you were after A diminished seventh instead, open the Adim7 chord page.
To play Abdim7, the Ab diminished seventh chord, you need Ab, Cb, Ebb and Gbb, the root, minor third, flat five and diminished seventh.
All 5 voicings are fretted without a barre, and none uses an open string. In sound, Abdim7 is the vii chord of A harmonic minor, even though that key spells it with different letters. Where a half-diminished chord keeps a minor seventh, the fully diminished chord lowers the seventh once more.
Abdim7 has the same pitches as the vii chord of A harmonic minor, and the A harmonic minor scale contains all four of them. The mic check in the player at the top listens while you play, so you can see whether every string of the shape sounds.
Ab diminished 7th guitar chord is also written as Abdim7, Ab°7 or Abo7. It is also known as the Ab fully diminished seventh chord.
Abdim7 Chord Notes and Formula
Notes of the Ab dim7 chord:
Tones in the Diminished Seventh chord:
Formula: 1 b3 b5 bb7
Same chord, different name: Abdim7 is also written as G#dim7 (G# diminished seventh).
Abdim7 Chord Interactive Fretboard
Want a structured chord roadmap instead of jumping between pages?
Go to the full guitar chords tutorial.
Abdim7 Guitar Chord Diagrams
Position 1 Movable
Ab Diminished Seventh Finger Positions
- Mute the B string
- Mute the high E string
- Place your index finger (1) on the fret 3 of the D string
- Place your middle finger (2) on the fret 4 of the low E string
- Place your ring finger (3) on the fret 4 of the G string
- Place your pinky finger (4) on the fret 5 of the A string
Position 2 Movable
Ab Diminished Seventh Finger Positions
- Mute the low E string
- Mute the high E string
- Place your index finger (1) on the fret 7 of the G string
- Place your middle finger (2) on the fret 8 of the A string
- Place your ring finger (3) on the fret 9 of the D string
- Place your pinky finger (4) on the fret 9 of the B string
Position 3 Movable
Ab Diminished Seventh Finger Positions
- Mute the low E string
- Mute the A string
- Place your index finger (1) on the fret 9 of the D string
- Place your middle finger (2) on the fret 9 of the B string
- Place your ring finger (3) on the fret 10 of the G string
- Place your pinky finger (4) on the fret 10 of the high E string
Position 4 Movable
Ab Diminished Seventh Finger Positions
- Mute the A string
- Mute the high E string
- Place your index finger (1) on the fret 3 of the D string
- Place your middle finger (2) on the fret 3 of the B string
- Place your ring finger (3) on the fret 4 of the low E string
- Place your pinky finger (4) on the fret 4 of the G string
Position 5 Movable
Ab Diminished Seventh Finger Positions
- Mute the low E string
- Mute the A string
- Place your index finger (1) on the fret 6 of the D string
- Place your middle finger (2) on the fret 6 of the B string
- Place your ring finger (3) on the fret 7 of the G string
- Place your pinky finger (4) on the fret 7 of the high E string
Find more shapes in our all guitar chords online library. If you
prefer a printable pdf, download
the Free Guitar Chords Chart Pdf
Chords That Go With Abdim7
One key where Abdim7 fits is A minor, where it works as the vii°7 chord, built on the raised 7th of the harmonic minor, so it pulls straight to the tonic. These are the main chords of that key, the ones you will often hear around it:
See every key in the guitar keys chart, or build a progression with these chords in the chord progression generator.
More Ab Chords
Want to know how this chord is built? Read diminished and half-diminished chords, or browse all Ab guitar chords.
Created by
Giancarlo is a musician (teaching guitar since 2000), software engineer, AI consultant and published researcher
FAQ
What notes does Abdim7 contain?
Abdim7 is spelled Ab, Cb, Ebb and Gbb. These are the root, minor third, flat fifth and diminished seventh. They sound like G#, B, D and F.
Why does Abdim7 need Ebb and Gbb?
Chord letters run A, C, E, G. A flat fifth on the letter E needs Ebb, and the diminished seventh on the letter G needs Gbb. They sound like D and F.
Is Abdim7 the same as G#dim7?
Yes. Abdim7 and G#dim7 have the same four pitches. G#dim7 is written with simpler sharps and Abdim7 with flats and double flats.
Which scale covers Abdim7?
The Ab whole-half scale contains all four chord tones. Its spelling is Ab, Bb, Cb, Db, Ebb, Fb, F, G, so some notes need double flats.
How many Abdim7 voicings can be played?
There are 5 voicings, none using an open string or a barre. The lowest sits at fret 3 and the highest at fret 10.
