Thanks Mario!

In the Berklee course I'm in right now, probably the biggest revelation that I've learned and am just starting to internalize, is that the major chord is not just the 1 3 5 of the scale but also the 7 and 9. It's right there in the very top line of the syllabus

C = C E G B D

That, to a non-jazz person, is a pretty big leap. Those of you that have been at this for decades - that might seem minor (no pun intended) to you, but for me, this is a revelation never having been exposed to the topic before.

Same goes for all of the other 'Five Basic Categories' and a few others.

My past chord theory understanding has involved these definitions:
Major has always been 1 3 5
Minor has always been 1 b3 5
Dominant has always been 1 3 5 b7
Diminished has always been 1 b3 b5, or two minor triads chained together
Augmented has always been 1 3 #5/b6, or two major triads chained together

Seeing the 'extra notes' on the basic chords is a bit hard to wrap my head around, but it's slowly getting in there.

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