A Harmonic minor
A Harmonic minor Scale
To create A minor as a resting place in our ears, it is necessary to have a leading tone. The leading tone to an A is G♯. To get this tone, we raise the 7 from the pure or relative minor. This creates a leaning into A as the tonic. Along with the D, we have the makings (the tritone) of a key center with A being the tonic. This also makes the V chord a Major chord (and a dominant 7 when 7th is added).
This scale produces an interesting sonic texture, with the 3 half step gap [m3] between the ♭6 and normal 7.
Play the scale alpha-order as shown in the training video, then improvise for one minute.
A Harmonic minor Chord Scale
Play the chord scale. Strum or fingerpick.
As mentioned, when we play in the Natural minor, it isn’t possible to create a strong A minor tonal center. The tones/chords of C Major tonify the tone C tone/chord, not the tone A and the chord A minor.
We can use G♯m7♭5 instead of the triad for G♯o.
We can also use a Bm7♭5 for the ii chord to make fingerings easier and more useful – as we can/did in Natural minor.