To Have and Have Not (film) Carmichael and Stanley Adams. "The Rhumba Jumps", by Mercer and Carmichael, is performed by the hotel band. Bacall shimmies out at the end of the movie to a faster "How Little We Know". The song "Baltimore Oriole" was intended to be Bacall's theme for the movie, but was merely added as background music on the soundtrack due to Bacall's vocal inexperience. Background music or nondiegetic music is minimal in the picture. However, the film score including the main title was composed by Franz Waxman. According to professor of film studies Ian Brookes, Howard Hawks uses jazz, particularly through interracial performance
To Have and Have Not (film) well as reducing Marie's drinking in the film. He also removed scenes in which Morgan appeared to be a murderer. Other additions included Marie becoming Morgan's sole romantic interest and Helen and her husband becoming fighters for the resistance. Finally, Faulkner made the time frame for the film three days instead of the many months depicted in the novel. Hawks intended to have the screenplay be loosely modeled on "Casablanca", which also starred Humphrey Bogart, hoping for the same success "Casablanca" had met at the box office. Production began on February 29, 1944, with only thirty-six pages of the screenplay