Gb Dominant 9th
Notes:Gb – Bb – Db – E – Ab
Formula:R-M3-P5-m7-M9
Intervals:P1-M3-P5-m7-M9
Scale Degrees:1-3-5-b7-9
Introduction
The Gb Dominant 9th piano chord (Gb9) consists of the notes Gb, Bb, Db, E, Ab. Formula: R-M3-P5-m7-M9 | Scale degrees: 1-3-5-b7-9.
Enharmonic equivalent: G♭ is enharmonically equivalent to F♯. See F# Dominant 9th.
Notes
Gb Dominant 9th Inversions
| Position | Notes |
|---|---|
| Root Position | Gb4 – Bb4 – Db5 – E5 – Ab5 |
| 1st Inversion | Bb4 – Db5 – E5 – Ab5 – Gb6 |
| 2nd Inversion | Db4 – E4 – Ab4 – Gb5 – Bb5 |
Key Signature
The key of Gb Dominant 9th has 6 flats: B♭, E♭, A♭, D♭, G♭, C♭.
B♭E♭A♭D♭G♭C♭
Theory: Intervals
Formula: R-M3-P5-m7-M9
Intervals: P1-M3-P5-m7-M9
The Gb Dominant 9th is built by stacking intervals from the root note. The formula R-M3-P5-m7-M9 describes the scale degrees used. The intervals P1-M3-P5-m7-M9 show the distance between each note in the chord.
Gb Dominant 9th — Frequently Asked Questions
What notes are in the Gb Dominant 9th chord?
The Gb Dominant 9th chord (Gb9) contains 5 notes: Gb, Bb, Db, E, Ab. Formula: R-M3-P5-m7-M9.
How is Gb9 used in music?
Gb9 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 Gb9?
Gb9 uses scale degrees 1-3-5-b7-9, giving it its distinctive sound.
Practice Tips
- Start by placing your thumb on Gb and spacing remaining fingers across the chord.
- Practice Gb9 slowly with separate hands before combining.
- Listen carefully to the tension created by the altered tones in this chord.
- Try voicing Gb9 in different octaves to find the most comfortable position.
- Resolve Gb9 to a nearby chord to hear its function in context.