Maybe a dumb question, but I was watching a band play the other day on the tube and the drummer had like 5 foot high clear plastic walls around him. I am sure it is for some sound reason...to maybe try to keep his mics from picking up other stuff or other mics from picking up drums??? Do they get a clearer final sound??? Or are they bullet proof and he is such junk that someone may want to shoot him??? Is this some new wave thingy or what? It looks pretty freaky to me!