Edge of Nostalgia or EON is an interactive album application that I worked on for much of 2012 and 2013. It’s essentially an app that uses the microphone on your iPhone to process the sound world around you in a musical way. It’s a seven track ambient music album that blends the sounds around you into the music. A train rides by, kids playing across the street, the ambient sounds of your office all filter through your microphone and blend in with the music, a new musical creation is born. It’s been very well reviewed (including a feature in Create Digital Music). You can download it from the Apps Store for 99 cents.
Here’s one of the tracks (without the processed realtime world of the listener)