Wood wool panels are used in our current construction methods as base for further plaster. But these panels have other properties. As for example a good acoustic absorption. And instead of cement, these panels use magnesite as binding agent and can even have coloured if required.

https://www.hiss-reet.de/?L=1

Whisperwool acoustic panels calm rooms, regulate humidity, filter harmful substances out of ambient air. Sheep wool is an absolute all-rounder. And when tante lotte pack it in such an aesthetic way, they even look pretty good.