A♭7♯5
Ab Dominant 7th Sharp 5 — the augmented dominant — the raised fifth leans hard into the resolution a fifth below.
The keys
A♭ – C – E – G♭
What's inside A♭7♯5
| Note | Interval from root | Degree |
|---|---|---|
| A♭ | Root | 1 |
| C | Major 3rd | 3 |
| E | Augmented 5th | #5 |
| G♭ | Minor 7th | b7 |
Inversions
| Position | Keys (low → high) |
|---|---|
| Root position | A♭4 – C5 – E5 – G♭5 |
| 1st inversion | C5 – E5 – G♭5 – A♭5 |
| 2nd inversion | E5 – G♭5 – A♭5 – C6 |
| 3rd inversion | G♭5 – A♭5 – C6 – E6 |
A working voicing
Split the chord between two hands the way working players do — a solid shell low down, the colour tones up top:
| Hand | Keys |
|---|---|
| Left (shell) | A♭2 – G♭3 |
| Right (colour) | C5 – E5 |
Where A♭7♯5 lives
Hard resolution
A♭7♯5 → D♭m9
Altered dominants resolve with maximum drama — especially into minor.
Chromatic approach
E♭m7 → A♭7♯5 → D♭
The alteration sharpens the pull of the standard two-five.
Put A♭7♯5 under your fingers
Hear every voicing, see the keys light up, and drill it in the interactive Chord & Voicing Lab.
Open the Chord & Voicing Lab →