The Climax

The Climax is a horror film produced by Universal Pictures, first released in the United States in 1944. The credits state this is based on the play of the same name by Edward Locke, but the plot has little connection to Lockes play.

The physician at the Vienna Royal Theatre, Dr. Hohner Karloff murders his fiancee, a prima donna, out of obsession and jealousy. Ten years later, he hears another young singer Foster who reminds him of the late diva, and is determined to make her sing only for him, even if it means silencing her forever.The film was originally conceived as a sequel to Phantom of the Opera 1943. The Climax was made using the sets of the 1943 Phantom of the Opera, which was in turn used Universals set for Phantom of the Opera 1925. ........

Source: Wikipedia