Megastars performing live at The American Folk Blues Festival 1962-1966
While we’re talking call and response, interaction between band members, and the way a performance can require your involvement. These guys are the reason why I think we have to talk about blues when we talk about jazz, and why dancing slow and low down is as important as dancing fast and furious.
Also, all your badassery is belong Victoria Spivvey.
[edit: There are three volumes of the amazing film documenting these festivals, and you find them all on amazon. There are also lots of recordings of the music (the same versions as in these clips) on emusic, amazon, etc. Just search for the title. Holy SMOKES.]