But as well as Woodstock, 1969 also marked the year that the Beatles took to the roof of the Saville Row headquarters of Apple Corps and knocked out a few tunes to promote their film, Let it Be.
This event proved to be the last time that the feuding Lennon and McCartney played together, so is a matter of some historical (and, therefore, financial) importance.
Fortunately for today's owners of the Let it Be copyright, one of those in attendance can remember everything and is due to star on a DVD released next year to mark the event.
For among the kaftan-clad stoners in the crowd was a young and eager media planner from Headley Byrne by the name of John Perriss, who happened to stumble upon the event.
For Perriss, only months in to the industry, was already showing early signs of the promise that would hold him in such good stead in the future.
He was wandering past on his way from his office in Great Pulteney Street to an impromptu client visit with Reed in Piccadilly.
Perriss was interviewed recently to give his recollections and his memories will be among those found on the forthcoming DVD. The producers are hoping to find other members from the crowd that congregated in a stupefied daze at the foot of the Apple Corps headquarters way back when. But, perhaps unsurprisingly, few have stepped forward to add their "memories". Funny, that.