But how did they do this? Tilman told us the story:
A part of the library was realized in collaboration with an expert who restored every single of the big old tower clocks on his own. A work where you have to be very detailed and precise. He also owns a clock which is from around 1600 A.D.. It is really astonishing to see something work that was crafted that long ago, hearing it is like doing a time travel!
And if you are curious about the clocks which were recorded, you must know that the metadata of the sound files include a photo of each clock.