"Clamp on headphones, start up the iPhone app by the musical duo Bluebrain and walk into Central Park. The music does not begin until you pass through an entrance and head into the trees. Then it sounds like an orchestra tuning up, a chaotic jumble of wind chimes, electronic moans and discordant strings. Push farther into the park, and a sweet violin melody emerges over languid piano chords." James McKinley Jr. from http://www.nytimes.com/2011/12/08/arts/music/bluebrains-app-central-park-listen-to-the-light.html