(n.) The projector, manager, or conductor, of an opera or concert company.

MC administrator agent auteur ballyhoo man barker callboy conductor costume designer costumer costumier deputy directeur director emcee equestrian director exhibitor governor intendant makeup man manager master of ceremonies playreader producer prompter rector responsible person ringmaster scenewright set designer showman spieler stage director stage manager supercargo theater man theatrician ticket collector usher usherer usherette