[oldembed src="https://www.youtube.com/v/SXh7JR9oKVE?fs=1" width="400" height="243" resize="1" fid="21"]

As one commenter at YouTube put it: "I've seen this about a dozen times and I still get teary-eyed each time! It gives me hope that if a few dedicated artists can bring together absolute strangers in such a joyful way, we might survive these darkest of times."

Open thread below....