[Note: This post has been updated (1) as of 11:55 AM Eastern on 11 Jul. See below.]
In conjunction with
our current a previous Featured Past Post entry (Gould's Goldberg — Earlier or Later?), here's a video of Glenn Gould in performance of the Goldberg. I've no idea of the original source for this video or of the date of its recording, but judging from Gould's reading, the date is around the time of the 1981 CD recording (the "Later" of the "Earlier Or Later" in our Featured Past Post entry's title). For reasons unknown, the closing Aria da Capo is omitted.
Update (11:55 AM Eastern on 11 Jul): Constant Reader TMK of Washington, DC advises us that the above Gould video is a film made by Bruno Monsaingeon in April/May, 1981. Our thanks to TMK.