Great idea! Small feedback: one of the pianos listed for Minneapolis is in Concourse C at the airport. While this is, in fact, an actual piano, you have to go through security to play on it. So I'm not sure if this counts as a public piano?
Guy a few feet ahead of me pauses, sits down, and unleashes a beautiful melody that stops everyone in their tracks.
There's an applause, he calmly gets up, and we all continue on our way.
Edit: I had to do some seriously creative google dorking to find it, but this was the melody: https://www.youtube.com/watch?v=RjqkkuhRt_M
https://www.youtube.com/watch?v=zka65VYD318
And he is also a great painter and there is an awesome video of him painting a portrait of Josh Wright, who is a concert pianist that has lots of educational videos online.
https://www.youtube.com/watch?v=ovu-u8BTGxI
One thing I love about watching Barton is that he has the hands of a mere mortal. So you can see how he accomplishes various reaches and fingerings if you don't have gargantuan piano hands.