How I plan to animate a Pony playing a Piano

I made a video earlier asking for help from musicians, and I got a lot of concerns about how the heck I'm going to animate a cartoon pony that only has hooves to work with to play the Piano. I figured I might as well just make another video showcasing exactly what I plan to do for this, what I don't plan to do, and why I'm doing it this way.

Previous Video on this topic:
https://www.youtube.com/watch?v=lxhVO-Sv1Yc

Видео How I plan to animate a Pony playing a Piano канала DJTHED