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Fig. 1 · G major blues on the keyboard

piano scale

G major blues

G1A2B♭♭3B3D5E6

Major pentatonic with a flattened third added next to the third — the two live side by side rather than replacing each other.

on guitaron ukulele

Written out

Fig. 2 · G major blues, ascending

Every accidental is written in, rather than left to a key signature, so the letters can be read one at a time.

The step pattern

GWAHB♭HBW+HDWEW+HG

What is true of it

G major blues is G, A, B♭, B, D and E, and back to G.

Its steps are W – H – H – W+H – W – W+H, where W is a whole step and H a half.

Chords made only of these notes

EmminorEdimdiminishedEm7minor seventhEm7♭5half-diminished seventhGmajorGmminor

Found by testing every chord in the catalogue against these 6 sounds, not chosen.

Other scales on G

G major pentatonicpentatonicG minor pentatonicpentatonicG bluespentatonicG majormajorG natural minorminorG harmonic minorminor

C maj bluesC♯ maj bluesD♭ maj bluesD maj bluesD♯ maj bluesE♭ maj bluesE maj bluesF maj bluesall 374