Tonight at 21:00 and 23:00 it will be used to play #tweetscapes live. You can use some special #hashtags in your tweets to influence the concert, like #SoundArt or #ZKM. It will work from anywhere in Germany, you don’t have to be there. You can even send a tweet including #Stille (#silence) to make it shut up for a while.
But that wouldn’t be very nice during a concert, would it?