A flat seventh piano chord (Ab7)
Also written G#7 (G sharp seventh)
The seventh chord (dominant seventh) adds a minor seventh to the major chord. It creates tension that wants to resolve: essential in blues, jazz and rock’n’roll.
On the keyboard
Root position
- Notes
- A♭ – C – E♭ – G♭
- Fingering (right hand)
- 1 – 2 – 3 – 5
1st inversion
- Notes
- C – E♭ – G♭ – A♭
- Fingering (right hand)
- 1 – 2 – 3 – 5
2nd inversion
- Notes
- E♭ – G♭ – A♭ – C
- Fingering (right hand)
- 1 – 2 – 3 – 5
3rd inversion
- Notes
- G♭ – A♭ – C – E♭
- Fingering (right hand)
- 1 – 2 – 3 – 5
Chord notes
| Note | Interval |
|---|---|
| A♭ (A flat) | root |
| C | major third |
| E♭ (E flat) | perfect fifth |
| G♭ (G flat) | minor seventh |
Formula: 1 – 3 – 5 – b7 · A♭ – C – E♭ – G♭
A progression with this chord
The ii – V – I: the seventh chord (V7) builds tension that resolves to the tonic chord (I).