The Warsaw rising of 1944--not to be confused with the Warsaw Ghetto uprising of 1943--pitted Polish insurgents of the Home Army against the Germans in a two-month battle that left the city in ruins.

Playtime, a Paris-based sales, production and equity investment company, has picked up “Chopin, a Sonata in Paris,” an ambitious biopic of famed composer and pianist Frédéric Chopin hailing from ...