The Germans have been talking about some things on the fb page and I'm also in email contact with a magazine. So here, things are going quite well
edit: also, we decided to bring instruments to Cologne where we want to sit on the sidewalks, sing GD songs and collect money for NRDC. We figured out that you can do it legally for one hour only, then you have to move to a different spot. No idea about other countries, but if others want to do the same thing, be aware that what you do is legal=)