Answer:
They are many and one, they wave and they drum, used to cover a stare, they go with you everywhere.
You heard me before and then again. Afterward I die until you call me again.
Tear me off and scratch my head, what once was red is black instead. What am I?
I sit in a corner while travelling around the world.
What is easy to get into but hard to get out of?
Why is the letter B always cool?