Theater arts involves live performers called actors and actresses presenting a theatrical experience on stage before a live audience. It is a collaborative performance of different artistic departments bringing a production to life. Actors represent concepts from scripts under a director's instruction, communicating the experience to audiences through elements like stagecraft, lighting, costumes, and makeup. There are several basic types of theater including drama, musical theater, comedy, and tragedy, as well as improvisations which are improvised performances without formal preparation.