https://www.youtube.com/watch?v=mWdk0-9ZpCQ&feature=emb_logo

describe a live musical situation with which you are familiar. It could be in any venue: a bar, a concert hall, a church, a street corner, etc..

What sort of behavior or etiquette do you observe?
How do the performers usually present themselves?
What is the expectation of the audience?
Is there interaction between the two?
How have you witnessed reenforcement of these expectations?