City Soundscapes

You are the mayor of a nice beach city. Unfortunately this location is very attractive to burglars and other "nice" people. Once upon a time you got to defend your city. But of course as a mayor you cannot go out on the streets to fight. Instead you send your police and you try to do everything you can to help defending the city center. In City Soundscapes you get control over a few roofs where you can build speakers (in fact line arrays) to play music all over the city. Humans of course like so...