I only know three piano films:
1)“Dangerous Moonlight” (1941), also known as “Suicide Squadron” with Anton Walbrook
(Queen of Spades). The score is written by Richard Addinsell and the Warsaw Concerto
is played by Louis Kentner.
2)“The Seventh Veil” (1945) with James Mason, Ann Todd & Herbert Lom, psychological
thriller about a pianist.
3)Sviatoslav Richter – Documentary – The Enigma.
I only saw this documentary only once but did not learn what I wanted to know and perhaps
I have to see it again.