There must be plenty of others that I've now forgotten, alas - I've often thought they should video perfomances, and I suspect music might well be why I think that would be a good idea. The play has to be well performed in the first place, obviously - music is not enough on its own - and the music has to be good too, but more than that it has to be (I think this would be the right word) visceral. It has almost to enter from your feet up, something much deeper than how it sounds to the ear.
And then I went and riffled through the recent classical music releases in Forsyths, and realised even more quickly, and with no sense of surprise, just how many I would be tempted to buy for the artwork instead of the music. Packaging is embarrassingly important to me.
So what's that all about? I look at the art and want the music; I look at the music and want the art.