What I am reading:
Back in fall 2008, when the App Store was less than 100 days old, I wrote about an incredibly trippy and innovative application called RjDj (iTunes link). The app is a bit hard to describe, but it essentially takes audio or motion input from your iPhone, passes it through a variety of filters, and outputs music that’s customized to your surroundings (you really need to try it for yourself to see what it’s like). Now, RjDj is taking its application to the next level: the company has released a new desktop app called RJC1000 that allows Mac users to easily build their own reactive music for use on any of RjDj’s growing roster of applications.
To take a step back, when you use RjDj, you listen to what’s called a “Scene” — a combination of filters that determine what your reactive music sounds like. A Scene can pay attention to your iPhone’s microphone, accelerometer (so it can ‘hear’ motion), and even your GPS position. It then interprets those inputs to generate a dynamic music soundtrack. 
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