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G blues diminished scale on guitar
G blues diminished runs G, A♭, B♭, B, D♭, D, E, F. Box 1 places the root on string 6, fret 3 for a low start.
How it is built
Formula 1, ♭2, ♭3, 3, ♭5, 5, 6, ♭7
How do you play the G blues diminished scale on guitar?
G blues diminished in box 1 runs from fret 0 to fret 3, 17 notes across 6 strings, from E on the low E string at fret 0 up to G on the high e string at fret 3. The root falls on the low E string at fret 3, the G string at fret 0 and the high e string at fret 3.
Every note in this box, string by string
| String | Frets | Notes |
|---|---|---|
| 6 (E) | 0, 1, 3 | E, F, G |
| 5 (A) | 1, 2 | B♭, B |
| 4 (D) | 0, 2, 3 | D, E, F |
| 3 (G) | 0, 1, 3 | G, A♭, B♭ |
| 2 (B) | 0, 2, 3 | B, D♭, D |
| 1 (e) | 0, 1, 3 | E, F, G |
Box 2 · frets 3–6
G blues diminished in box 2 runs from fret 3 to fret 6, 17 notes across 6 strings, from G on the low E string at fret 3 up to B♭ on the high e string at fret 6. The root falls on the low E string at fret 3, the D string at fret 5 and the high e string at fret 3.
Every note in this box, string by string
| String | Frets | Notes |
|---|---|---|
| 6 (E) | 3, 4, 6 | G, A♭, B♭ |
| 5 (A) | 4, 5 | D♭, D |
| 4 (D) | 3, 5, 6 | F, G, A♭ |
| 3 (G) | 3, 4, 6 | B♭, B, D♭ |
| 2 (B) | 3, 5, 6 | D, E, F |
| 1 (e) | 3, 4, 6 | G, A♭, B♭ |
Box 3 · frets 6–9
G blues diminished in box 3 runs from fret 6 to fret 9, 17 notes across 6 strings, from B♭ on the low E string at fret 6 up to D♭ on the high e string at fret 9. The root falls on the B string at fret 8.
Every note in this box, string by string
| String | Frets | Notes |
|---|---|---|
| 6 (E) | 6, 7, 9 | B♭, B, D♭ |
| 5 (A) | 7, 8 | E, F |
| 4 (D) | 6, 8, 9 | A♭, B♭, B |
| 3 (G) | 6, 7, 9 | D♭, D, E |
| 2 (B) | 6, 8, 9 | F, G, A♭ |
| 1 (e) | 6, 7, 9 | B♭, B, D♭ |
Box 4 · frets 9–12
G blues diminished in box 4 runs from fret 9 to fret 12, 17 notes across 6 strings, from D♭ on the low E string at fret 9 up to E on the high e string at fret 12. The root falls on the A string at fret 10 and the G string at fret 12.
Every note in this box, string by string
| String | Frets | Notes |
|---|---|---|
| 6 (E) | 9, 10, 12 | D♭, D, E |
| 5 (A) | 10, 11 | G, A♭ |
| 4 (D) | 9, 11, 12 | B, D♭, D |
| 3 (G) | 9, 10, 12 | E, F, G |
| 2 (B) | 9, 11, 12 | A♭, B♭, B |
| 1 (e) | 9, 10, 12 | D♭, D, E |
Why it sounds like that
G blues diminished adds a ♭2 to G hungarian major, keeping the same ♭3, 3, ♭5, 5, 6, ♭7. The scale alternates half and whole steps, creating a tritone between G and D♭. Compare it with G hungarian major to hear the added minor 2nd.
When to use it
G blues diminished fits G major and G minor chords, adding tension with the ♭2 and ♭5. Use it over dominant progressions in C major or A minor for a bluesy, outside flavour.
Which position to practise
Practise Box 1 first: the root sits on string 6, fret 3, covering frets 0–3 and setting up the next position.
Common questions
What notes are in G blues diminished?
G blues diminished contains G, A♭, B♭, B, D♭, D, E, and F. The scale includes both minor and major thirds, a diminished fifth, and a minor seventh.
Which chords work with G blues diminished?
G blues diminished works over G major and G minor chords. The scale's ♭2 and ♭5 create tension that resolves to chord tones.
Is G blues diminished the same as G diminished?
G blues diminished is an eight-note scale, not a diminished seventh chord. It combines a blues scale with a half-whole diminished pattern.