About the G flat 7b5 Diminished scale
G flat 7b5 Diminished is used for jazz solos over dominant chords with a flat fifth. Think of it as a dominant scale with a flat fifth and a chromatic seventh.
Its notes are G♭, A♭, B♭, C♭, C, D, F♭, and F. The formula is W W H H W W H H.
Also called Messiaen Mode 6.
On the piano, this mode touches the black keys G♭, A♭, and B♭. G♭ 7b5 Diminished runs five white keys in a row on the piano.
Notes and intervals
| 1 | GbG♭ | Root |
|---|---|---|
| 2 | AbA♭ | Major 2nd |
| 3 | BbB♭ | Major 3rd |
| 4 | CbC♭ | Perfect 4th |
| 5 | CC | Diminished 5th |
| 6 | DD | Minor 6th |
| 7 | FbF♭ | Minor 7th |
| 8 | FF | Major 7th |
| Steps | W W H H W W H H |
|---|---|
| Semitones | 2-2-1-1-2-2-1-1 |
| Degrees | 1 2 3 4 ♭5 ♭6 ♭7 7 |
Shapes
Chromatic
Circle of Fifths
Related scales
7b5 Diminished in other keys
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