Answer:
A building where people and stories are on stage
It flies when it's on and floats coming off.
They belong to me; they belong to you; They can make you feel happy or make you feel blue; They never end until the day you do.
Tool of thief, toy of queen. Always used to be unseen. Sign of joy, sign of sorrow. Giving all likeness borrowed.
I move without wings, Between silken string, I leave as you find, My substance behind.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.