I kind of love this video because it doesn't go quite the way you'd think.
I figured she was going to just kind of bang on the piano - and she does, at first, but then she kinda-sorta starts to play it.
If you look just behind her, you can see her high chair. Because she usually has to eat dinner before Kara and I are ready to sit down to eat, I will sit and play the piano while she has dinner. It seems like she's started to pick up on that, if only a little bit.