Watch VoirFilms. Backstage at the National Opera in Warsaw. Worn hands carve wooden props, bend sheets of metal, dye tonnes of silk. Not a word is spoken. The Kubrick-esque images of the craftspeople speak for themselves. "Backstage" is a tribute to the invisible labor of costume makers, upholsterers, dyers, metal workers, shoemakers, wig designers, carpenters, and all the other craftspeople who devote their lives to art but are almost always obscured by the incandescence of the stage.