Pure genius!
Enjoy
This is precisely the reason I quit piano lessons at age 13. If I couldn't play like that by age 6, I was doomed.
The kid is brilliant. Not only technically proficient, but listen to his awareness of dynamics, even at that stage of development. Imagine him at age 21.
Me, I gave up and took up guitar.. at which I'm still just... good.
Music genius is a gift from God. I imagine Mozart must have known that.