piano scale
F harmonic minor
F1G2A♭♭3B♭4C5D♭♭6E7
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
FWGHA♭WB♭WCHD♭W+HEHF
What is true of it
F harmonic minor is F, G, A♭, B♭, C, D♭ and E, and back to F.
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, F natural minor differs from it by exactly one note.
Chords made only of these notes
CmajorCaugaugmentedC7dominant seventhD♭majorD♭mminorD♭dimdiminishedD♭maj7major seventhEdimdiminished
Found by testing every chord in the catalogue against these 7 sounds, not chosen.
Other scales on F
C harm minC♯ harm minD♭ harm minD harm minD♯ harm minE♭ harm minE harm minF♯ harm minall 374