From “The Pianist”: Chopin Nocturne C sharp minor (Arjen Seinen).

In the film they use the ballade no 1, but I think this piece would be better.(Arjen Seinen Piano The Netherlands)
https://www.youtube.com/channel/UCNCILcrP10drQMpJ4DUQZrA
https://www.youtube.com/channel/UCZU6ZoeVIUCXIL4PFHxMjdg