improvisation and communication

I always got fascinated by the improvisation and communication that happen in jazz and rap music. Fascination is the reason why I enjoy sitting as an audience although I don't really understand what they are playing and what they're trying to say with their music. But there are these improvisation and communication (and also the extraordinary skills) that I never quite understand how the heck that that happens. It feels like something that's beyond logic to me.

I found this TEDx video which tried to explain how that all happens. Well in the end he didn't give any answer and I don't usually like it when everything is tried to be explained scientifically, but I found this video interesting and I do enjoy listening to intellectual talks. And it reminds me of my fascination of things, which feels good. I always need fascination, it's like a basic need. So, yeah, here goes..