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edits
Changes
m
→Augmented Seventh
| (R M3 a5 M7) || R+7 (R = Root Note) || C+7, (C E G# B)
|}
I honestly didn't even think about this chord until looking at the diatonic 7th chords for harmonic minor. This is the III+7 chord.
R M3 a5 M7
-M3- -M3- '''-m3-'''
----a5----
'''----P5----'''
'''-------M7-------'''
Similar to how the added m7 helps stabilize the Half Diminished 7th Chord, the added M7 here adds m3, P5, and m7 intervals, helping to stabilize the chord. The 3rd, 5th, and 7th of the chord compose a major triad. This lightens the dissonance of the (R 3 5) augmented triad.
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