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Fig. 1 · G# blues on the keyboard

piano scale

G♯ blues

G♯1B♭3C♯4D♭5D♯5F♯♭7

Minor pentatonic with one note squeezed in between the fourth and the fifth. It is written as a flattened fifth, so the fifth letter carries both of them and the fourth keeps its own.

The same sounds spelled from the other side are A♭ blues.

on guitaron ukulele

Written out

Fig. 2 · G# 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

G♯W+HBWC♯HDHD♯W+HF♯WG♯

What is true of it

G♯ blues is G♯, B, C♯, D, D♯ and F♯, and back to G♯.

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

Chords made only of these notes

G♯mminorG♯dimdiminishedG♯m7minor seventhG♯m7♭5half-diminished seventhBmajorBmminor

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

Other scales on G♯

G♯ major pentatonicpentatonicG♯ minor pentatonicpentatonicG♯ major bluespentatonicG♯ majormajorG♯ natural minorminorG♯ harmonic minorminor

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