It didn’t do so well at finding middle C on a piano keyboard:

https://gemini.google.com/share/c9af8de05628

I did manage to get one image of a piano keyboard where the black keys were correct, but not consistently.

I've tried similar stuff such as: "Show a piano with an outstretched hand playing a Emaj triad on the E, G#, and B keys".

https://imgur.com/ogPnHcO

Even generating a standard piano with 7 full octaves that are consistent is pretty hard. If you ask it to invert the colors of the naturals and sharps/flats you'll completely break them.

Fooled me because it was locally correct!