I have only just come across this amazing project by creative agency Digital Kitchen. Stanley Piano is the world's first interactive piano! In July 2012 A piano was placed in Seattle which was linked up to three computers, which would play songs requested by twitter users. Uses could tweet their song choices to @stanleypiano and were notified when their songs were due to play. The piano would then play the request fully visible with all the keys moving! I think this is such a brilliant and innovative way to connect with an audience and interact with social media.
Overall Stanley recieved 220,000 web views and almost 5,000 song requests. You can see the project on the website below and on twitter. Stanley still recieves song requests to this day.
Introducing Stanley from DIGITAL KITCHEN on Vimeo.