Lauren Bacall screen test for "To Have and Have Not". Hawks asked his secretary to find out more about her, but the secretary misunderstood and sent Bacall a ticket to come to Hollywood for the audition. After meeting Bacall in Hollywood, Hawks immediately signed her to a seven-year contract, with a weekly salary of $100, and personally began to manage her career. He changed her first name to Lauren, and she chose "Bacall" (a variant of her mother's maiden name) as her screen surname. Slim Hawks also took Bacall under her wing, dressing Bacall stylishly and guiding her in matters of elegance,
What Love Is Made Of three minutes and fifty-five seconds (3:55), "What Love Is Made Of" is an uptempo dance and house track that has been described as "rave-y" and "trance-y". Its instrumentation contains the sounds of pianos and synthesizers. Jordan Sargent of "Spin" observed that it continued the musical style first introduced in Katy's 2012 extended play (EP), "Danger EP", which was "straight-forward house". Idolator's Sam Lansky compared her performance in the song to recording artist Siobhán Donaghy. Critical response to "What Love Is Made Of" was generally positive: most critics noted Katy's vocal performance and commended its sound. Siân Rowe from "NME" was