Lauren Bacall a visit to the National Press Club in Washington, D.C., on February 10, 1945. It was there that Bacall's press agent, chief of publicity at Warner Bros. Charlie Enfield, asked the 20-year-old Bacall to sit on the piano while U.S. Vice President Harry S. Truman played. After "To Have and Have Not", Bacall was seen opposite Charles Boyer in "Confidential Agent" (1945), which was poorly received by critics. By her own estimation, it could have caused considerable damage to her career, had her performance as the mysterious, acid-tongued Vivian Rutledge in Hawks's film noir "The Big Sleep" (1946), co-starring Bogart,
What Love Is Made Of dance music. She then got a bassline which made her "want to dance", and included it in the track. She also told the website that she wrote the song about the "feeling of love, what one person can give to you that someone else can't". What Love Is Made Of" was premiered during Irish DJ Annie Mac's eponymous program on BBC Radio 1, on 10 May 2013, though its digital download only occurred on 5 July 2013. It was serviced as an extended play, where it was bundled with three remixes, by MK (Mark Kinchen), Felix da Housecat and Brackles.