Ab 9♯5
Notes:Ab – C – E – Gb – Bb
Formula:R-M3-A5-m7-M9
Intervals:P1-M3-A5-m7-M9
Scale Degrees:1-3-#5-b7-9
Introduction
The Ab 9♯5 piano chord (Ab9♯5) consists of the notes Ab, C, E, Gb, Bb. Formula: R-M3-A5-m7-M9 | Scale degrees: 1-3-#5-b7-9.
Enharmonic equivalent: A♭ is enharmonically equivalent to G♯. See G# 9♯5.
Notes
Ab 9♯5 Inversions
| Position | Notes |
|---|---|
| Root Position | Ab4 – C5 – E5 – Gb5 – Bb5 |
| 1st Inversion | C4 – E4 – Gb4 – Bb4 – Ab5 |
| 2nd Inversion | E4 – Gb4 – Bb4 – Ab5 – C6 |
Key Signature
The key of Ab 9♯5 has 4 flats: B♭, E♭, A♭, D♭.
B♭E♭A♭D♭
Theory: Intervals
Formula: R-M3-A5-m7-M9
Intervals: P1-M3-A5-m7-M9
The Ab 9♯5 is built by stacking intervals from the root note. The formula R-M3-A5-m7-M9 describes the scale degrees used. The intervals P1-M3-A5-m7-M9 show the distance between each note in the chord.
Ab 9♯5 — Frequently Asked Questions
What notes are in the Ab 9♯5 chord?
The Ab 9♯5 chord (Ab9♯5) contains 5 notes: Ab, C, E, Gb, Bb. Formula: R-M3-A5-m7-M9.
How is Ab9♯5 used in music?
Ab9♯5 is used in jazz, fusion, and contemporary music to add harmonic color. It appears as a dominant or tonic chord depending on context.
What is the scale degree formula for Ab9♯5?
Ab9♯5 uses scale degrees 1-3-#5-b7-9, giving it its distinctive sound.
Practice Tips
- Start by placing your thumb on Ab and spacing remaining fingers across the chord.
- Practice Ab9♯5 slowly with separate hands before combining.
- Listen carefully to the tension created by the altered tones in this chord.
- Try voicing Ab9♯5 in different octaves to find the most comfortable position.
- Resolve Ab9♯5 to a nearby chord to hear its function in context.