Thank you Baker!
>where did you find it
t'was some useless actionism by what normies consider "stars".
As also Greg Gutfeld noted, I didn't know any of them (but never watched it any further than the 1st 5 secs).
"25 celebrities sing 'Imagine' in isolation, creating a moving montage"
https://www.youtube.com/watch?v=omEDLKS5pbY