STRINGSCALES

G major blues Scale — Guitar Fretboard Visualization

Low E string: E, G, A, Bb, B, D, E at frets 0, 3, 5, 6, 7, 10, 12

A string: A, Bb, B, D, E, G, A at frets 0, 1, 2, 5, 7, 10, 12

D string: D, E, G, A, Bb, B, D at frets 0, 2, 5, 7, 8, 9, 12

G string: G, A, Bb, B, D, E, G at frets 0, 2, 3, 4, 7, 9, 12

B string: B, D, E, G, A, Bb, B at frets 0, 3, 5, 8, 10, 11, 12

High E string: E, G, A, Bb, B, D, E at frets 0, 3, 5, 6, 7, 10, 12

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G major blues

The major blues scale takes the major pentatonic and slips a flat 3rd between the 2nd and the major 3rd. That single chromatic blue note lets you rock the line between minor grit and major brightness, the move you hear all over country, western swing and uptempo blues. Slide or bend from the flat 3rd into the 3rd over a dominant chord and the scale plays itself.

it consists of these notes and degrees:

G

I

A

II

B♭

bIII

B

III

D

V

E

VI

Characteristic note: Bb (b3), the blue note that slides into the major third.

Same notes, different mode

G major blues uses the same notes as the scales below. Start from a different note and you get a new mode built on the very same note set.

E minor blues

major blues in all 12 keys, with chords and related scales

tip
  • Slide or hammer from the flat 3rd (Bb) into the major 3rd (B); that half-step move is the entire character of the G major blues scale.
  • Use it over the I and IV chords of a blues in G, then switch to the minor blues scale for the V chord or for darker choruses.
  • Target the 6th (E) over the I chord; it turns plain pentatonic phrases into western swing and Nashville vocabulary.
  • Keep the blue note off the strong beats: pass through bIII (Bb) on an upbeat and resolve to III on the chord tone.

How to play G major blues on guitar

All six open strings belong to G major blues, including the open G itself as root, so you can drone, ring and let chords bleed everywhere in this key. Open D covers the fifth while open B holds the major third, which means a full root chord skeleton rings with zero fingers down. Box position lives at fret 3, ending at 7. E minor blues uses this exact grip nine semitones higher, so shapes you already run in E minor transfer note for note.

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