Is it as coherent as we like to think it? Does it demand coherence?
And does beauty differ dependent on categories? After all, we do watch differently than we listen. And when we watch, the pleasure of, say, seeing a beautiful feature film is quite different from the pleasure of seeing a piece of video art. And although of course the merging and the postmodernism and the over-all mishmash exists in discourse, the categories are still quite strong, our (my) attitudes vary tremendously depending on what I'm watching. It's a tricky area, tagging. But the fact that it's tricky should only encourage to explore, no?