Applause (musical) resulting musical could not contain any dialogue or characters that had been created for the movie but could use the original material that the movie also used. In April 1969, it was announced that Strouse, Adams, and book writer Sidney Michaels were beginning to work on the show, with Lawrence Kasha producing. In July 1969, movie star Lauren Bacall was cast as aging theater star Margo Channing, the role played by Bette Davis in "All About Eve". Bacall greatly identified with the role, explaining, "The Margo Channing of "Applause" and myself were ideally suited. She was approaching middle age. So
Bette Davis that she was 'Larger Than Life', a tough broad who had survived? Probably some of both." Her film choices were often unconventional: Davis sought roles as manipulators and killers in an era when actresses usually preferred to play sympathetic characters, and she excelled in them. She favored authenticity over glamour, and was willing to change her own appearance if it suited the character. As she entered old age, Davis was acknowledged for her achievements. John Springer, who had arranged her speaking tours of the early 1970s, wrote that despite the accomplishments of many of her contemporaries, Davis was ""the" star