The double faces scene
Anyone who's seen the film will remember the scene just before "You and Me", with the four singers who switch between male and female faces - visually striking and a cool summing up of a theme of the entire film. But how did they achieve that? It does look to me as if most of the faces, or all, are genuine, not some kind of masks worn on the back of their heads. The female faces, or rather that front side of their heads, are clearly genuine, though some of them could be drag, and some of the gent faces look alive too, not masks. I've seen it many times; is it done by skilful editing so that there are really two teams of singers or is it actually done with masks facing the audience?