Did you read the comments? Some guy was very critical of the execution, and another informed him that the pianist was Gershwin.
The comments can be such a howl sometimes on You tube!
It often descends into a duel of Mr. Self-Righteous vs. Mr. Know-It-All! LOL!
I always read the comments. Sometimes I actually find useful info in them.
Sometimes I think commenters at Youtube are just 14 year olds who think it’s cool to say f*ck as much as possible.