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 well-known, particularly "Fasten your seatbelts, it's going to be a bumpy night". She was again nominated for an Academy Award, and critics such as Gene Ringgold described her Margo as her "all-time best performance". Pauline Kael wrote that much of Mankiewicz' vision of "the theater" was "nonsense", but commended Davis, writing "[the film is] saved by one performance that is the real thing: Bette Davis is at her most instinctive and assured. Her actress - vain, scared, a woman who goes too far in her reactions and emotions - makes the whole thing come alive." Davis won a Best Actress