That piano
is so crazy. lol
It's impossible to put that many wrong notes and have it sound that bad without it being on purpose. And I think it actually works well here, especially at that pretty low, background volume it's at. Moreso just provides a vibe of basically everything you said in your description. Excellent work.
As for any criticism, I think i'd like to hear a few of the piano notes extended randomly instead of them all being cut short immediately.
[TSR Audio]