now, why did this make me think of thunderbox?
Charlois council in Rotterdam, on the other hand, has decided to amuse itself by embracing a lateral and wholly silly solution. Now, whenever youts begin dey ’angin’ in the Zuidplein underground station, a hastily erected PA blasts out Dutch carols, rendered on a barrel-organ, until the youts disperse. A council spokesman says the teenagers usually leave “within a matter of minutes”
more here (Times Online>