7ths in A Natural minor = 7ths in C Major
If you are wondering why we didn’t play the 7ths in A Natural minor (possibly the next logical step in exploring minors) before the Harmonic minor, it is because these would be (are) the same chords as the 7ths in C Major, just starting on the A minor (“vi becomes i”).
The qualities would be im7, iim7b5, IIIMaj7, ivm7, vm7, VIMaj7, VII7 (Am7, Bm7b5, C+7, Dm7, Em7, FMaj7, G7). Any chord with tone G is different (the 1, 3, 5, 7 chords – the G is the 7, 5, 3, R of these chords, respectively). Like the relative Major, there are only 4 qualities of 7ths.
It’s a good idea here to apply the voicings we just learned to play the Natural minor chord scale. All of the fingerings are in the group.
This message could have appeared before the Harmonic, but as a teacher, I tend to leave the space open for students to ask…”Hey, what about Natural minor?”… Answer?…”You already know it”.