Alan Gibson directed Crescendo, which was written by Alfred Shaughnessy and Jimmy Sangster. The film stars Stefanie Powers, James Olson, Margaretta Scott, Jane Lapotaire, and Joss Ackland; Malcolm Williamson composed the music, and Paul Beeson handled the cinematography. Susan Roberts, played by Powers, goes to southern France to stay with the Ryman family while she’s working on her thesis about the late composer …