Luke Jerram creates live arts projects. This summer he has placed thirty pianos around London (http://www.streetpianos.com/london2009/). Each is uniquely decorated and all say, in big letters, “Play Me, I’m Yours.” There’s a wonderful slideshow of people interacting with the piano’s at http://www.streetpianos.com/london2009/gallery.
An of course, there is a growing body of YouTube videos of people playing the pianos. Here are some of my favorites so far:
“I’m A Believer” on Carnaby Street
Katzenjammer Play 24 Pianos in 8 Hours
Here’s one where the piano at the Millenium Bridge is used in a rather more high production number:
Andrew Balkwell “Nothing (‘Bout Your Girl)”