G♯ major blues

G♯1A♯2B♭3B♯3D♯5E♯6

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

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

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.

G♯WA♯HBHB♯W+HD♯WE♯W+HG♯

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 ukulele its notes fall in 25 places, which is what makes a scale a shape rather than a list.

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