From Woodstock, one of the greatest on-stage performances in rock 'n' roll history, Ten Years After doing "I'm Goin' Home." An exclamation point at the end of one era and the beginning of a new one.
I saw these guys in Moncton, New Brunswick [!] on a Labour Day back in, I think, 1975. I was 17 and had hitch-hiked up from Halifax where, the day before, I'd seen Nazareth play. Nazareth was OK, but the Ten Years After concert remains in my brain to this day as one of the best rock shows I've ever seen.