From June 1st through June 16th, 88 pianos will be placed throughout the five boroughs by the non-profit Sing for Hope, whose mission is to provide public art and “Art for All.” One of these pianos is interactive, and takes music requests through Twitter. Using the handle @stanleypiano, users can tweet a song they would like the piano to perform, which would in turn be added to the queue. A notification is sent when the song is about to be performed. Clearly, the opportunity for the public to physically work with art via social media is a powerful interaction that can be leveraged on many levels.