C Hungarian minor

C1D2E♭♭3F♯♯4G5A♭♭6B7

Harmonic minor with a raised fourth, which puts a second augmented second in the middle of the scale.

Written out

Fig. 2 · C Hungarian minor, ascending

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

CWDHE♭W+HF♯HGHA♭W+HBHC

C Hungarian minor is C, D, E♭, F♯, G, A♭ and B, and back to C.

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

On the same tonic, C harmonic minor differs from it by exactly one note.

Across the first twelve frets of the ukulele its notes fall in 30 places, which is what makes a scale a shape rather than a list.

Found by testing every chord in the catalogue against these 7 sounds, not chosen.