they are still looking for more people to take part in the performance, so if you live nearby mannheim and want to participate, feel free to sign on to the forum, or contact @beichstaedt, one of the organizers of the event. the official forum with more information (auf Deutsch) can be found here.
UPDATE: the performance was quite an interesting experience! the concept was maybe better than the actual "music" but it was nonetheless quite a unique event to take part in. i hope to see more things like this in the future!
a very nice photo set by @nicolabernhart can be seen here
some more photos and video clips on this page
apparently the live video streaming didnt work, but they have promised to post the full video "soon"

