I looked more for that Tetris PMV on YouTube, didn't see it. I did find video not in TPA - two of them:

2013 - "[PMV] Soviet Pony - Soviet March":
https://iv.ggtyler.dev/watch?v=GwHJjhj9-7s

2016 - "My Little Pony (USSR, 1926)":
https://iv.ggtyler.dev/watch?v=qJIaqdDf7FY

Edit from a YT video, pfp from npr:
. https://iv.ggtyler.dev/watch?v=74ZNSQp-O3I "Can You Always Win a Game of Tetris?"
.. nearby https://iv.ggtyler.dev/watch?v=_jmixkcQkdw "Tetris 101 with Jonas Neubauer"