Music can do many things more than just speeding things up like healing stickmans or killing them if too much music is passing trough if it is possible it can manually heated/cooled and making music tone higher/lower and it can affect many other particles then like slowing photons ...
Many things are worthless like if music particle ignores most particles it maybe don't create lag and i trough music particles move like waves like -....-....-....-....-....- lines are particles so particles arent everywhere walls absorb them (exept those what lets pass air)
Guys, we get it already, back off. (besides I belive that flame wars aren't allowed) I think most of us disagree with this Idea, so (here comes an Einstein) lets move on!
Idea: a solid that makes sound (sort of like the console sound command) when electricity hits it, heating and cooling it changes the tone. You could use it for a tone to say that something has been done, and in RPGs and stuff there could be a "Game Over" song. But NOT a music PARTICLE, because, as stated before, sound is pressure.