It's an interesting discussion. I read some research recently that showed that during a mystical, religious, or meditative experience the language centres of the brain have a big decrease in activity. This is why people can so rarely describe their experience during one of these occurrences. This also means that in trying to explain it, the experience is diminished. I think this could translate to music as well. When you're at a show, and you really get sucked in, it's almost like a trance. The music has it mystical draw on you, and the feeling is almost ethereal. So if you're taking photos or video, which by all means are pretty shoddy, not only may you be distracting someone else from their experience, but also lessening your own. Firstly by the fact that you're not in the moment whilst you're trying to point a camera, and secondly because you'll rewrite any 'magical' memory of your night when you view the sub-par camera footage.