| Pretty much every chord he played was a power chord. Thats just a root and a 5th. It’s neither major or minor, because you need the 3rd to establish that And nearly every punk and metal band uses predominantly power chords, without any real care in the world as to what the progressions are. It just sounds good to them. There aren’t any rules because punk is a DIY genre. If you told him he was doing a thing, he’d do the opposite just because. And it would still probably slap. Kurt cobain was a fantastic song writer but you see these types of articles come out now and then propping him up as a genius. His own quote refutes that, and anyone who listens to punk music will agree that trying to analyze it using classical western tonality is silly and pretentious |
Also part of what made him so good was how he played vocal melody and rhythm off of chords. So in some songs you might have plain power chords but the melody hits important major or minor notes.
I don’t know what your definition for genius is but the guy wrote some of the best songs in human history and did so without a primary collaborator or big production crew of cowriters and collaborators. I think we can call him a genius.