Altering your Melodic Minor consciousness
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So - as the late great Eddie Harris once said - "Listen Here"!
Since we'd all probably agree that the so called "Altered Scale" (aka "Altered Dominant Scale", "Diminished / Whole Tone Scale", "Pomeroy Scale", and Locrian b4, et al) is derived from the Seventh Mode of Melodic Minor - which is itself derived from the Major Scale matrix - we've pretty much answered our own question.