Besides enjoying the fantanstic music, take a time and listen to the lyrics. From 1969 Montreaux Festival and more actual today than ever.
Quote: "The President, he’s got his war, folks don’t know just what it’s for. Nobody gives us rhyme or reason, have one doubt, they call it treason. We’re chicken-feathers, all without one gut (God damn it!). Tryin’ to make it real — Compared to what?"
link via industrial technology and witchcraft