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| I | ♭III | ♭VII | IX | XI | XIII |
|---|---|---|---|---|---|
| Root | Minor third | Minor seventh | Major ninth | Perfect eleventh | Major thirteenth |
| F# | A | E | G# | B | D# |
The Gb Minor Thirteenth chord is composed of 6 notes :
These notes form a minor thirteenth chord, maximum extension of minor.
The m13 chord Gb Minor Thirteenth theoretically contains: 1-3b-5-7b-9-11-13 (7 notes).
Maximum extension of a minor chord, used in modal jazz and neo-soul for extremely rich textures.
The m13 chord represents the minor summit:
Modal jazz: maximum dorian color.
Neo-soul: absolute minor richness.