guitar 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.
Written out
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.
Across the first twelve frets of the guitar its notes fall in 42 places, which is what makes a scale a shape rather than a list.
Chords made only of these notes
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