Blue Heart was written by the prolific feminist and socialist playwright Caryl Churchill. Churchill's work examines perceptions and prejudice in class, gender and race. In order to do so, she experiments with theatrical form and style. For example in Cloud Nine, a play about the relationship between colonialism and the oppression of women, women play the husbands, men play the wives and a white actor plays the black manservant. This cross-casting helps highlight the artificiality of the social codes being portrayed.
Blue Heart was actually made up of two short plays, Heart's Desire and Blue Kettle. In Heart's Desire a couple wait excitedly for their daughter to arrive back from Australia. The scene keeps stopping and replaying itself with slight variations leading to increasingly surreal outcomes, such as the arrival of a group of terrorists, a busload of children or an ostrich instead of a daughter.