"What changed? The historians point their fingers at the middle classes. With the aristocracy declining in the wake of the French Revolution and subsequent upheavals, the bourgeoisie increasingly took control of musical life, imposing a new conception of how concerts should unfold: programs favored composers of the past over those of the present, popular fare was banished, program notes provided orientation to the uninitiated, and the practice of milling about, talking, and applauding during the music subsided. To some extent, these changes can be explained in anthropological terms: by applauding here and not applauding there, the bourgeois were signalling their membership in a social and cultural élite". Why so serious?