Ab9 chord
Ab dominant 9th · also written G#9
C4
Ab
C
Eb
Gb
Bb
Want it in context? Open Ab9 on the full piano.
Notes
- AbR
- C3
- Eb5
- Gbb7
- Bb9
Formula: R – 3 – 5 – b7 – 9
Ab9 inversions
The same notes, with a different note in the bass.
Root position Ab9
C4
Ab
C
Eb
Gb
1st inversion Ab9/C
C
Eb
Gb
Ab
C6
2nd inversion Ab9/Eb
C5
Eb
Gb
Ab
C
3rd inversion Ab9/Gb
C5
Gb
Ab
C
Eb
More Ab chords
Dominant 9th chords in other keys
FAQ
What notes are in the Ab9 chord?
The Ab dominant 9th chord (Ab9) has 5 notes: Ab, C, Eb, Gb and Bb.
How do you play Ab9 on the piano?
Put your right hand on Ab, C, Eb, Gb and Bb, 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 dominant 9th chord?
R – 3 – 5 – b7 – 9 (in semitones from the root: 0, 4, 7, 10, 14).
Is Ab9 the same as G#9?
Yes. Ab and G# are the same key on the piano (enharmonic), so Ab9 and G#9 sound the same.