It’s from Scott’s Bass Lessons — but history you need. Let Scott and the video speak for itself.
The Bass, 1935-1969: The Players You need to know.
Am I biased toward bass? Well, yeah — biased toward most stuff in the bass clef, really.
Larry Graham? Heck, in comments here, tell who your favorite bass player was, before 1970. And in hopes of actually stimulating a conversation, throw in any double-bass, stand-up bass players you want to add.