Your lucky Vladimar, in my regular travails around la belle France I've been attacked most public holiday times throughout the year as well with assorted oompah band music (Colmar, Pontarlier, Dole), truly awful 'pop' crap (Lyon, Clermond, Dieppe .... et al). Your convenor must rule his gang-of-four with a tight fist
I've suffered the Swiss equivelant of Jimmy Shand in their towns, but you would expect that, I suppose.
I've always wondered if the raison d'etre for these systems was public address or purely public entertainment.