Answer
Lili Marleen is a 1980 film starring Marisa Berenson, Klaus Kinski, and Mario Adorf. It is based on the story of the German singer Lale Andersen, who wrote and performed the song of the same name. The film follows Andersen's life from her early days as a singer in Hamburg to her rise to fame as the "Lili Marleen" singer during World War II.