One of Monnickendam’s favourite subjects in his paintings was the audience that came to watch at the theatre. The three figures that caught his attention here in the theatre box seem to have been captured on canvas in an instant, as if the artist had made the painting there and then. Quick, dextrous brushstrokes suggest the form, light and shade. The three are completely absorbed in the play. Their mask-like faces reflect the light of the light cast on stage.