DA Pennebaker died and that’s a very sad thing. It’s not often mentioned but the best of his docus (The War Room, 101, Original Cast Album Company, Monterey Pop) are very enjoyable in a way that say Nick Broomfield’s just aren’t; they’re funny, colourful, warm, human, amazing to look at. He never really quite got the credit he deserved IMO.
This clip is him at his best, as he shows Janis but then also cuts back and forth to the audience where he catches Mama Cass watching open-mouthed in amazement.