This trope is Older Than Steam. In the early 1770s, Paris was a warzone between fans of two composers, the german Christoph Gluck and the Italian Niccolo Piccini. It went so far that people would introduce themselves with their preferred composer's name rather than their own, and street fights between Gluckists and Piccininists were common. Ironically, Gluck and Piccini were good friends. Benjamin Franklin, who was in Paris at the time, wrote home:
How righteous and just and mild must the French rulers be, if the greatest cause of heated emotions among their subjects are the relative merits of two foreign composers!