Close Encounters of the DJ kind

There's an AI that listens to music and responds by playing a remixed version of what it heard. Then a human DJ interacts with the AI by sampling what the AI played. And so on. Remember Close Encounters of the Third Kind? But this isn't science fiction- we're already talking to the aliens.

 

This land is your land

This land is your land, this land is my land
From California to the New York island,
From the redwood forest to the Gulf Stream waters;
This land was made for you and me.