My studioroom has a (very) high ceiling at 4.5m and I also have a piano in it.
Below you can see how I treated the walls. Panels went up in stages (that's why the different colours and sizes of panels) but what made the real difference was placing the bass-traps.
Thank you miro, I was indeed very lucky to find this apartment.
The ceiling is 4.5m high and it is also not flat, but it is devided into 4 small arches along its length.
The walls are about 70cm thick.. mind you, the house is 500 years old. Here's a pic of it.
I've not yet had the chance to...
I have just finished re-building my room-studio and I used laminated throughout. Looks great and sound just the right side of lively for recording acoustic instruments.
A smallish rug is at hand for increased deadening and also removable absorbing panels.
Here's a couple of pics for ya!