La Double Vie de Véronique is a 1991 French-Polish-Norwegian feature film directed by Krzysztof Kieślowski. The film leans heavily on the doppelganger motif. A film about intimacy and music.
You have Weronika in Krakow, Poland, and her doppelganger Véronique in France. Both girls are born on the same day, don’t know of each other’s existence, suffer from the same heart condition, are both musical. At the moment when one dies, the other receives a cassette tape from a mysterious stranger, with clues with which she begins a quest.