@treone Greg, I'm studying Hip-Hop with my son at the moment for his Sonic Arts assignment with the whole lock-down thing. It's interesting, as my part of Hip-Hop is more around the fringes as I was more into indie, electronica and rock through the 80's and 90's (as well as a long-standing passion for Jazz). Of course, there's a 12" of The Message in my collection.
There's a great documentary on Amazon Prime called simply '808', charting the influence of the Roland TR-808 Rythmn Composer on music overall, encompassing hip-hop, dance, mainstream... https://www.amazon.com/808-Damon-Albarn/dp/B06XSNHSY9
And I've found an expansive (and instructional) documentatary series on the history of Hip Hop on Netflix (four whole seasons!) called 'Hip Hop Evolution'. We're working our way through it. Building a working definition of Hip-Hop for his assignment. I'm along for the ride, and learning plenty. Who said lock-in with your family can't be fun? https://www.netflix.com/title/80141782
EDIT: Sorry folks, repeating myself (although with greater detail) - my post of 12 April earlier on this thread mentions the above. D'oh!