Gb Locrian Mode
Gb – Abb – Bbb – Cb – Dbb – Ebb – Fb
Formula:H-W-W-H-W-W-W
Intervals:P1-m2-m3-P4-d5-m6-m7-P8
Scale Degrees:1-♭2-♭3-4-♭5-♭6-♭7-8
Introduction
The Gb Locrian mode is the seventh mode of the Abb Major scale. It has a diminished quality with flatted second and fifth degrees, the most dissonant of the seven modes.
Gb Locrian Mode Notes
| Degree | Name | Note | Interval |
|---|---|---|---|
| 1 | Tonic | Gb4 | P1 |
| ♭2 | Supertonic | Abb4 | m2 |
| ♭3 | Mediant | Bbb4 | m3 |
| 4 | Subdominant | Cb5 | P4 |
| ♭5 | Dominant | Dbb5 | d5 |
| ♭6 | Submediant | Ebb5 | m6 |
| ♭7 | Leading Tone | Fb5 | m7 |
| 8 | Octave | Gb5 | P8 |
Gb Locrian Mode — Frequently Asked Questions
What notes are in the Gb Locrian mode?
Gb Locrian contains: Gb, Abb, Bbb, Cb, Dbb, Ebb, Fb. Seventh mode of Abb Major. Enharmonic of F# Locrian.
How does Gb Locrian differ from Gb Natural Minor?
Flatted 2nd (Abb) and flatted 5th (Dbb). Diminished tonic.
What is the parent major scale?
Seventh mode of Abb Major (enharmonically G Major).
How is Gb Locrian used in music?
Over Gbm7b5. Enharmonic F# Locrian is more common.
What chords are built from Gb Locrian?
Gbdim, Abb, Bbbm, Cbm, Dbb, Ebb, Fbm. Diminished tonic.
What songs use Locrian?
Progressive metal, experimental jazz.
Practice Tips
- Gb Locrian and F# Locrian are enharmonic.
- Translate to F# Locrian for easier reading.
- Diminished tonic — most unstable mode.
- Over Gbm7b5 in jazz.
- Metal applications for maximum darkness.
- Compare with Gb Phrygian.