There was quite a bit of change over the centuries. But they were among the first organs brought back to the baroque ideals and the original state as much as po

There was quite a bit of change over the centuries. But they were among the first organs brought back to the baroque ideals and the original state as much as possible. There is a lot of information about these efforts, but mostly in German. Basically the Cosmae organ is now like it was in 1688. This was finished in 1975 and influenced a lot of other instruments to be brought back as close as possible to their original state. https://www.organartmedia.com/de/hus-arp-schnitger https://www.organartmedia.com/de/hus-arp-schnitger http://www.orgelbits.de/huss-schnitger.html http://www.orgelbits.de/huss-schnitger.html