A♭ diminished piano chord
The A♭ diminished chord (also written G♯), written A♭dim, on a keyboard. Its notes are A♭ – C♭ – E♭♭ — free to print or download below.

Notes in the A♭ diminished chord
The A♭ diminished chord is built from the root, a minor third and a diminished fifth, giving the notesA♭ – C♭ – E♭♭. On the keyboard diagram those keys are shaded so you can see the shape at a glance.
How to play the A♭ diminished chord
- Find the notes. The A♭ diminished chord uses the notes A♭ – C♭ – E♭♭. Locate each one on your keyboard using the diagram above.
- Place your fingers. In root position, play A♭ – C♭ – E♭♭ together — thumb on the lowest note and the remaining fingers on the notes above.
- Play it as a block or broken. Play all the notes at once for a solid chord, or one after another for an arpeggio.
A♭ diminished chord — frequently asked questions
What notes are in the A♭ diminished chord?
The A♭ diminished chord (A♭dim) is made up of the notes A♭ – C♭ – E♭♭ — the root, a minor third and a diminished fifth.
What is the chord symbol for A♭ diminished?
It is written as A♭dim. On a lead sheet or chord chart you would see "A♭dim" above the stave.
Is the A♭ diminished chord diagram free to print?
Yes — print it or download the PDF or PNG for free, with no account or sign-up.