Stir It Up, Riddle #11

I spread through society like the black plague.

Never killing but I’m something no one can contain.

Through the centuries I’ve been the subject of change.

If you don’t like one type of me I promise I’m not all the same.

Any emotion I can emit a lot.

Now playing is what is hot.

Maybe I don’t have the coolest notes on the block

but I will remain popular whether you like it or not.