One of the great piano classics by Mozart:
I'm currently practicing the first movement, and although I don't have as much time/energy as I might want for this, it greatly soothes me, especially given all that is going on. It's kind of a "the way is the goal" thing, mastering something in tiny steps, being fully concentrated on pulling that music I hear in my mind out of my unwilling flesh...
The way Barenboim plays it actually comes close to how I "hear" it, compared to all other versions I know of, but still not quite. It's annoying if you know exactly how you want it to sound, but can't pull it off that way quite yet
Anyway, for me it was a great decision to get back into classical piano a bit after a 25+ years hiatus. Love it.