The Accompanist (1992)

In 1942 Nazi-occupied Paris, a young and impoverished accompanist named Sophie Vasseur (Romane Bohringer) gets a job with famed singer Irene Brice (Elena Safonova). As Irene's possessive husband and manager, Charles (Richard Bohringer), a businessman collaborating with the Nazis, wrestles with his conscience, the highly impressionable Sophie becomes obsessed with Irene, taking on the role of maid as well as accompanist, living life vicariously through Irene's triumphs and affairs, especially romantic. When Irene relocates to London, Sophie goes along, much to the discomfort of Charles.