Here is the end of Dmitri Shostakovich’s monumental 7th symphony, „the Leningrad“, written partly in by Germans occupied (and completely destroyed) Leningrad, more than a million civilians died plus 700.000 soldiers, and when it was premiered in Leningrad during the siege (Aug 9 1942) the orchestra consisted of partly starved musicians which had to be found on the streets, fed and helped medically, and the performance was broadcasted to the front lines; the story goes that German soldiers listen

Shostakovich - Czech Philharmonic Orchestra, Karel Ančerl - Symphony No. 7 "Leningrad"