I'd written. I know the city and I know the subject matter and I know the symphony and if I'd gotten off my arse and gone and done the research I probably could have produced a book about half as good as this one. It's the story of course of Shostakovich's Leningrad Symphony. This was Shostakovich's seventh symphony and his opus #60. It was begun before World War 2 but only finally completed during the extraordinary circumstances of the siege of Leningrad after the German invasion of the Soviet Union. The Wehrmacht's Army Group north pushed right to the edges of the Leningrad (known before and now as St Petersburg) and surrounded it to the south and east while the Nazis' Finnish allies surrounded it to the North. For 900 days the city was completely surrounded and attacked mercilessly. While the city was being bombarded by heavy artillery and bombed relentlessly by the Luftwaffe the greatest Russian composer of the twentieth century Dmitri Shostakovich was working on his masterpiece (one of his masterpieces anyway) in cellars and bomb shelters and occasionally in music rooms and rehearsal spaces. Eventually evacuated first to Moscow and then a safe-ish city on the Volga Shostakovich finished his symphony in early 1942 where it took on a new life as a propaganda piece that toured the world raising awareness of Russia's war effort.
You can get Symphony For The City of the Dead at all good bookshops and you can listen to Shostakovich's 7th Symphony here.