Franek
WT
I am afraid that Warsaw Concerto and Dangerous Moonlight are virtually unknown in Poland. I am not sure if the film was ever shown or aired here. Such things were prohibited for quite a while, and now they are forgotten, sadly.
Given that the film was released in the UK during WW2 when Poland was occupied by the Germans, I'm not surprised the accompanying music doesn't have the popularity it had in the UK back then and to some degree still has now in the UK.
According to Google, Dangerous Moonlight was last broadcast by the BBC three years ago, probably in better quality than the low-low quality versions available on YouTube.
Thanks