Sky Captain and the World of Tomorrow months before Conran made the movie with his actors, he shot it entirely with stand-ins in Los Angeles and then created the whole movie in animatics so that the actors had an idea of what the film would look like and where to move on the soundstage. To prepare for the film, Conran had his cast watch old movies, such as Lauren Bacall in "To Have and Have Not" (1944) for Paltrow's performance and "The Thin Man" (1934) for the relationship between Nick and Nora that was to be echoed in the one between Joe and Polly. Avnet constantly pushed
What Love Is Made Of extremely positive about "What Love Is Made Of", describing it as "darker than anything" from "On a Mission", while calling it "slinky". The reviewer went on to commend the "irresistibly pouty" chorus. Pitchfork Media's Katherine St. Asaph commented that, in the song, the singer "sound[ed] completely enthralled, by either her lover or the music" and complimented her voice, noting that it seemed "ten times bigger than before". Jordan Sargent of "Spin" magazine called the track "exuberant" and highlighted Katy's vocal performance, which he deemed "typically fantastic", while the team from pop music website Popjustice gave "What Love Is Made Of"