"ZEITPERLEN": AN ARTWORK OF PICTURES, MUSIC, AND SINGING! STAND IN THE MIDDLE OF THE CIRCLE AND MOVE BOTH HANDS. AT THE SAME TIME, YOU CAN ALSO MOVE FORWARDS AND BACKWARDS! WHAT CHANGES?

That's right:

The images change: It sparkles a little bit more or a little less, or becomes louder or quieter. Sometimes the singer Céleste even appears out of nowhere like a ghost and sings for you!

Zeitperlen