movie trivia: as time goes by

After shooting, Max Steiner spoke against using "As Time Goes By" as the song identifying Rick and Ilsa, saying he would rather compose an original song in order to qualify for royalties. However, Hal B. Wallis replied that since the filming had ended,Ingrid Bergman had cut her hair very short for For Whom the Bell Tolls (1943) which was shooting at a distant locale and she therefore could not re-shoot already-completed scenes that had used "As Time Goes By".