The D Sharp Phrygian diminished 4 mapped to the 3/2 Scale. The standard minor/major ambiguity that the diminished fourth introduces to minor scales (being the enharmonic equivalent of a major third) takes on a different hue in the compressed space of a 3/2 perfect fifth. Now the third and fourth degrees offer two different flavors of a "major second" - one flat and one sharp - before opening up to something just wide of an equal tempered "major third" for the fifth scale degree. This makes for an interesting harmonic contour.
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