the person who shows people where to sit in a public place.

Noun: a piece of music for one instrument or an instrument and a piano divided into four parts.

The quality of being average or not very good.

the lead

Encouraging you and making you want to do something or feel something.

a person that stands in front of musicians and directs their performance 

Cast

Choreographer

Adjective: well known for being bad.

A collection of pieces of music taken from different places and put together.

Noun: the people that have a role in a film/play/serial.

an occasion when you see a film or play before it has been released

nervous feelings experienced by performers before acting.

stage .....

a collection of tracks belonging to the same CD

Adjective: strange or unpleasant way of combining with other things.

Setting

Noun: a person that does the difficult or dangerous scenes in a film.

Close-up

Box office

a place where people train and learn to become professional performers.

... school

A period of time that you spend working somewhere.

an experienced person who helps and advises a person with less experience