What are your thoughts on become the knight's videos? I think he makes some of the most informative videos regarding music on youtube.
https://www.youtube.com/watch?v=qcFBLf8fGlw
https://www.youtube.com/watch?v=NeA7DgUO-OQ
https://youtu.be/zwFE81BJoRY?t=634
https://www.youtube.com/watch?v=O4do3eLv4lM