About the G 7b5 Diminished scale
G 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, D♭, E♭, F, and F♯. The formula is W W H H W W H H.
Also called Messiaen Mode 6.
Three of the notes in G 7b5 Diminished are black keys, D♭, E♭, and F♯. The mode runs four white keys in a row on the piano.
Notes and intervals
| 1 | GG | Root |
|---|---|---|
| 2 | AA | Major 2nd |
| 3 | BB | Major 3rd |
| 4 | CC | Perfect 4th |
| 5 | DbD♭ | Diminished 5th |
| 6 | EbE♭ | Minor 6th |
| 7 | FF | Minor 7th |
| 8 | F#F♯ | 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