I liked this explanation of harmony using different levels of musical comprehension (by Jacob Collier, featuring Herbie Hancock)
https://www.youtube.com/watch?v=eRkgK4jfi6M
Love both Collier and Hancock but I have to confess I didn't really feel the duet. Cool video though. Yoda and young padawan. Insanely talented
my favorite part is how he explained harmony to the professional musician, very enlightening. I have been a big fan of his Youtube content and wish to see him live when he comes to my town.