Quartal or Double Fourth Chords, are chords made up of the Root, fourth and flatted seventh:
Q3=[1,4,7b]

So, my question for you guys is. Is this chord Major or minor?
And do you know of any chord progression that includes a Q3 chord?

Notice in the generic formula that the seventh is flatted, making it a minor seventh. But both major and minor triads can have a flatted seventh added.
7=[1,3,5,7b]
-7=[1.3b,5,7b]


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