A Harlot's Progress is an opera in six scenes by the British composer Iain Bell which is based on William Hogarth's series of etchings of the same name. The libretto is by British author Peter Ackroyd.The story concerns a country girl, who comes to the big city and becomes mistress of an old, rich man. Thrown out by him because of her taking of younger lovers, she becomes diseased and mad and eventually dies in misery.