Random post about music theory for my own future reference

I been learning some stuff about something called "set theory" and its blowing my mind omg,

I still got a lot more to understand, but this has already helped me understand so much other stuff about music like why cadences work etc


[youtube=https://www.youtube.com/watch?v=oGeBem72R3Y]

[youtube=https://www.youtube.com/watch?v=3fe_NatE5w8&list=PLKWIRLQnfaw1KUMTG3b9mFrt0D3MFHvPF&index=2]

[youtube=https://www.youtube.com/watch?v=qHH8siNm3ts&t=640s]

Also this:

http://harmonagon.com/

And this:

[youtube=https://www.youtube.com/watch?v=IT9CPoe5LnM&t=4s]