A♭add9 chord on piano
A♭add9 is A♭, C, E♭ and B♭. You'll find A♭ on the middle black key of the three. Press Play to hear it, then try it at half speed.
root position · A♭–C–E♭–B♭ · right hand 1-2-3-5
- Notes
- A♭ · C · E♭ · B♭
- Formula
- 1 · 3 · 5 · 9
How to play A♭add9 on piano
From A♭, go 4 half steps up to C, 3 half steps up to E♭ then 7 half steps up to B♭. Press the 4 keys together and that's A♭add9.
- Right hand: 1 on A♭, 2 on C, 3 on E♭ and 5 on B♭.
- Left hand: 5 on A♭, 3 on C, 2 on E♭ and 1 on B♭.
- On the keyboard it's black, white, black and black keys, the same pattern as C♯add9, so your hand shape carries over.
Two ways to voice A♭add9
- root position: A♭–C–E♭–B♭. RH 1-2-3-5.
- close voicing: A♭–B♭–C–E♭. RH 1-2-3-5.
The close voicing folds the ninth down next to the root, which fits under one hand; the spread voicing sounds wider.
A♭add9 chord changes
Songs rarely hold A♭add9 for long. Here's what your hand does on the moves that come up most.
- C♯ (IV in A♭ major): A♭add9 to C♯: play C♯ in 2nd inversion (G♯–C♯–E♯) and G♯ stays under the same finger, while C moves up to C♯ and E♭ up to E♯. C♯ on piano
- E♭ (V in A♭ major): A♭add9 to E♭: play E♭ in root position (E♭–G–B♭) and E♭ and B♭ stay under the same fingers, while C moves up to G. E♭ on piano
- Fm (vi in A♭ major): A♭add9 to Fm: play Fm in 1st inversion (A♭–C–F) and A♭ and C stay under the same fingers, while E♭ moves up to F. Fm on piano
A♭add9 is A♭ major with the ninth (the note a whole step above the root, an octave up) added. A♭add9 keeps the major sound and adds sparkle, which makes it a drop-in replacement for A♭ in quiet passages. Play it solid and then broken to hear the difference.
A short A♭add9 drill
Roll the chord up and back down, A♭, C, E♭, B♭, E♭, C, A♭, before playing it as a block.
The keys of A♭add9
A♭add9 is a add 9 chord, 1–3–5–9 from A♭. Root position, from the bottom: how A♭add9 is built.
| Note | Key | Fingers | Role |
|---|---|---|---|
| A♭ | black key | RH 1 · LH 5 | root |
| C | white key | RH 2 · LH 3 | major third |
| E♭ | black key | RH 3 · LH 2 | perfect fifth |
| B♭ | black key | RH 5 · LH 1 | ninth |
Written G♯add9, it's the same chord with the same keys.
A♭add9 in context
A♭add9 on guitar and ukulele
Switching instruments? Try A♭add9 on ukulele or A♭add9 on guitar, or compare them on the A♭add9 chord page.
Next to try on piano
Other add 9 chords
A♭add9 on piano: questions
What notes are in A♭add9 on piano?
A♭, C, E♭ and B♭: A♭ (black key), C (white key), E♭ (black key) and B♭ (black key). Right hand 1-2-3-5, left hand 5-3-2-1.
How do you play A♭add9 on piano?
Press A♭, C, E♭ and B♭ together (3 black, 1 white). Right hand: 1 on A♭, 2 on C, 3 on E♭ and 5 on B♭.
What are the inversions of A♭add9?
A♭add9 is usually played in root position (A♭–C–E♭–B♭) or as a close voicing (A♭–B♭–C–E♭).
What does A♭add9 look like on the keyboard?
black, white, black and black keys, the same pattern as C♯add9, so one hand shape covers all of them.
Checked automatically: no shape here plays a note outside A♭add9. Updated September 2026.