Originally Posted by L.A. BRONCOS FAN
The harmonic minor scale is like a melodic minor scale with a flatted sixth degree.
Or, you can think of it as a natural minor scale with a raised seventh.
Either way, the intervals are: 1, 2, b3, 4, 5, b6, 7.
Example: C harmonic minor = C, D, Eb, F, G, Ab, B
Start the above scale on the 5th degree (G) instead of the root, (C) and you have the fifth mode of C harmonic minor: G phrygian dominant (a.k.a. phrygian major.)
G phrygian dominant = G, Ab, B, C, D, Eb, F = 1, b2(b9), 3, 4, 5, b6(b13), b7
As you can see, the scale is a perfect fit for a dominant chord with a b9 and a #5 (or b13.)
In actual practice, the scale is used most commonly over a minor ii-V-I progression, e.g., Dmi7(b5) | G7(#5 b9) | Cmi7, etc.