The Technical crew, often abbreviated to "tech crew" or "techies", are the individuals employed behind the scenes (backstage) who control all the technical aspects of creating a concert, play, musical, opera or other live performance. A concert is a live Performance, usually of Music, before an Audience. A play, or stageplay, is a form of Literature written by a Playwright, almost always consisting of Dialogue between Fictional characters Musical theatre is a form of Theatre combining Music, Songs spoken Dialogue and Dance. Opera is an art form in which Singers and Musicians perform a Dramatic work (called an opera which combines a text (called a Libretto A performance, in Performing arts, generally comprises an event in which one group of people (the performer or performers behave in a particular way for another group of people In a broad terms, the participants in any production can be divided into one of three groups: the audience, the performers and the technical crew. Brooklyn Book Festival crowd by David Shankbonejpg|thumb|An audience at the Brooklyn Book Festival in New York City. The performing arts are those forms of Art which differ from the Plastic arts insofar as the former uses the artist's own Body, Face and presence The audience views the performance; the performers create the art; the technical crew is responsible for the design and operation of all the technical requirements of the production.
The role and composition of a tech crew can change significantly depending on the nature of an event, and often evolves as the production does. For example, in a simple theatre production, the technical crew might consist of a single person, operating the lights and controlling the volume of the sounds and music. In a large scale professional theatre productions, the technical crew can consist of dozens of different departments and may run into the hundreds of individuals. Each department has their own specific job that pertains to their area of expertise, but they are all part of the technical crew.
The technical crew on a performance fall into many different categories, based on the individuals area of expertise and responsibilities. This is a list of the many roles involved in Theatre, including both production-based personnel and permanent staff Some of the most common categories (those encountered on the largest variety of productions) include: lighting, audio, carpentry and rigging. In theater the term Electrician is generally applied to those that work with the various aspects of lighting The sound operator (also commonly called production audio engineer, audio engineer, sound board operator, sound technician, sound mixer In theater a carpenter is a Stagehand who builds sets and stage elements This list is far from comprehensive, and includes may specialities and niche departments.
A specific "sub-genre" of technical crew members are those individuals responsible for the operation of the technical aspects of a production in front of an audience, referred to as the running crew or deck crew. Running crew or run crew is a collective term used to describe the members of a Technical crew who supervise and operate ("run" the various technical In a number of medium to larger scale productions, the running crew will not be involved in the initial design and fabrication of a productions technical requirements, and will be responsible only for their proper functioning during the performance. It is also not uncommon for the running crew to leave after the final performance, and not be involved in the disassembly (strike) of a show.