To all those of us, which like to play an instrument there are also premises in HaDiKo. Please note: The piano room isn't soundproof, so please only use it to times when you'll not disturb any other inhabitants.
Piano room in K1
In the K1 building there is a piano room. There you'll find a piano (and a chair :-)). This room is not intended a music room, because it isn't soundproof.
Access is granted by the inhabitants of B-unten. Just have a look at the corridor door.
Music room in K4
In the K4 cellar there is a music room. This room is soundproof, however there will some people be complaining if you play at night. It is not allowed to play electronically enhanced instruments or percussion instruments.
The key is available of every inhabitant of L1 between 9 am and 10 pm.