piano scale
G harmonic minor
G1A2B♭♭3C4D5E♭♭6F♯7
Natural minor with the seventh raised, which buys a leading note and pays for it with a step and a half between the sixth and seventh.
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♭WCWDHE♭W+HF♯HG
What is true of it
G harmonic minor is G, A, B♭, C, D, E♭ and F♯, and back to G.
Its steps are W – H – W – W – H – W+H – H, where W is a whole step and H a half.
On the same tonic, G natural minor differs from it by exactly one note.
Chords made only of these notes
CmminorCdimdiminishedCm7minor seventhCm7♭5half-diminished seventhDmajorDaugaugmentedD7dominant seventhE♭major
Found by testing every chord in the catalogue against these 7 sounds, not chosen.
Other scales on G
C harm minC♯ harm minD♭ harm minD harm minD♯ harm minE♭ harm minE harm minF harm minall 374