piano scale
A harmonic minor
A1B2C♭3D4E5F♭6G♯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
AWBHCWDWEHFW+HG♯HA
What is true of it
A harmonic minor is A, B, C, D, E, F and G♯, and back to A.
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, A natural minor differs from it by exactly one note.
Chords made only of these notes
CaugaugmentedDmminorDdimdiminishedDm7minor seventhDm7♭5half-diminished seventhEmajorEaugaugmentedE7dominant seventh
Found by testing every chord in the catalogue against these 7 sounds, not chosen.
Other scales on A
C harm minC♯ harm minD♭ harm minD harm minD♯ harm minE♭ harm minE harm minF harm minall 374