Back again after a while with a video on a subject I've been thinking a lot about recently - the relationships of chords and scale degrees to each other.
More reading about Chord Functional Theory:
Great video analyzing the famous Tristan overture from this lens: https://www.youtube.com/watch?v=9sjc2HkHX1w
Chord function Wikipedia page: https://en.wikipedia.org/wiki/Function_(music)