 CONT: When Eliza sings "I Could Have Danced All Night", she goes  into the bathroom, turns on the tap, and wets a washcloth which she  presses against her chin and neck. She never turns off the tap, and  it is still running as she exits the bathroom. In the next shot, you  see one of the maids turn off the bathroom light, but she doesnt  lean over and turn off the tap.