on some previous threads about busking, people mentioned that sometimes you need a license, or even need to audition

It might be useful to pool our knowledge of the regulations in various places -- even if you prefer to flout them

In Belgium you usually need to register with the police ... I only busked without permission In Antwerpen I was stopped and warned by police (and friendlier people had warned me about the rules). In Oostend by the ferry I had no problems

I don't know what the rules are in Norway, but I had no problems there

Can anyone tell me about the Netherlands, especially Amsterdam?