So a few minutes ago I was just hanging around the tower above that Cabal ship where Xur currently is. All of the sudden I hear some music that felt out of place for Destiny. I see some names down below me where that Cabal ship is. As I get closer, the music starts playing louder. To my surprise there now seems to be some sort of juke box (actually more like a disc) on the wall you can trigger in that ship. The music doesn't play for long though, and there's different music that'll play when you trigger the disc. Not sure how much different music it will play though. Took about two different clips for video evidence. How many of you knew about this before? Is this also only active at certain times?