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Abdim chord

Ab diminished · also written G#dim

C4
Ab
Cb
C5
D

Want it in context? Open Abdim on the full piano.

Notes

  • Ab
    R
  • Cb
    b3
  • D
    b5

Formula: R – b3 – b5

Abdim inversions

The same notes, with a different note in the bass.

Root position Abdim

C4
Ab
Cb
C5
D

1st inversion Abdim/Cb

C4
Cb
C5
D
Ab

2nd inversion Abdim/D

C5
D
Ab
Cb
C6

FAQ

What notes are in the Abdim chord?

The Ab diminished chord (Abdim) has 3 notes: Ab, Cb and D.

How do you play Abdim on the piano?

Put your right hand on Ab, Cb and D, starting from Ab. A common fingering for three-note chords is thumb (1), middle finger (3) and little finger (5).

What is the formula of a diminished chord?

R – b3 – b5 (in semitones from the root: 0, 3, 6).

Is Abdim the same as G#dim?

Yes. Ab and G# are the same key on the piano (enharmonic), so Abdim and G#dim sound the same.