lets prefer <music> as well as <math> and <chem> for intuition reasons...
Two considerations: how should tags be handled that have subsidiary attributes like
music: <music tempo=50></music>;
I am totally d'accord.
and should we allow for a shortened form of some sort, like <math
value="e=mc^2" />?
I am totally d'accord with Brion:
<math>e=mc^2</math>
no experiments for a couple of chars. World is already too complicated (even after Saddam has been caught ;-) )