A production number is a term commonly used in the entertainment industry to describe a scene in a show or movie that involves a large cast, intricate dance routines, and elaborate costumes. Synonyms for this term include musical number, showstopper, ensemble number, dance sequence, and production piece. These terms are often used interchangeably and are used to describe any number that is an integral part of a production and involves a large amount of choreography and coordination. These production numbers are often the highlights of a show or movie and can be the most memorable parts of a production. They require a high amount of skill and talent from the performers and are usually the result of extensive rehearsals and planning.