Grand Ole Symphony?

Even the Marx Brothers would be at home in Denver's Boettcher Concert Hall come September, when the Colorado Symphony Orchestra's season starts. The audience often dresses in Levis and T-shirts. Lured by ads on country-music radio stations, concertgoers sip wine and beer with musicians beforehand. After, they flood the stage to chat and ask questions: Why, for example, does the French horn player put his hand into the instrument's bell? They clap between symphonic movements--a sign of boors--and wave at the players.

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