classical music concerts

The crumbling venues, the crumbling audiences, the tickets priced higher than a black market kidney, the weird way it's okay to scream certain Italian words from the audience but not to clap unless in special rarefied kinds of pause...
I just can't get a handle on classical music. I'm pretty sure that behind this door that's closed to me, there's a world of wonderful, enriching sound out there. And if I could only find the handle, I'd be able, at least, to stand on the threshold and catch my breathe at the panorama in front of me.