Ignaz von Mosel:

Here music daily performs the miracle that is only otherwise attributed to Love: it makes people of all social stations equal. Members of the nobility and of the bourgeoisie, princes and their retainers, those in authority and those beneath them sit together at one music stand, the harmony of the music making them oblivious to the disharmony of their social standing.

Ignaz von Mosel made the observation on the apparently egalitarian effect of music in Vienna