Originally Posted by: equatorQuartal 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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It's neither major nor minor, it's quartal.

Hmm...Lemme see, you COULD, in Aminor use a G quartal chord: G-C-F
You could use an A quartal as well, or an E quartal chord.

But since the chords are based around an entirely perfect interval (the fourth) they can be neither major nor minor. Kind of the same way power chords are neither major nor minor.