Answer:
They are many and one, they wave and they drum, used to cover a stare, they go with you everywhere.
I am expelled from you orally with a sound
I am a rock group that has 4 members, all of whom are dead, one of which was assassinated. What am I?
A spirited jig I dance bright, banishing all but darkest night. Air can't kill me but water can. Share me, I won't get less unless wind ruins me. What am I?
I'm sometimes white but most often I'm black. I take you there but never bring you back.
The answer I give is yes, but what I mean is no. What was the question?