If I were to pick one YouTuber it would be Adam Neely.
This guy is part bookworm nerd, part musician, part historian, part intellectual and part social commenter. The guy is just great and I understand probably 10% of what he says but I find him articulate, passionate about music and inspiring.
I like how he poses a really fundamental question (which for me turns into a profound question) and then answers it.
Here is one quote from this video. "You can't take the audience out of your music."
https://www.youtube.com/watch?v=k3iDKsjSiIQ