Szpilman found places to hide in Warsaw and survived with the help of his friends from Polish Radio and fellow musicians such as Andrzej Bogucki and his wife Janina, Czesław Lewicki, and Helena Lewicka supported by Edmund Rudnicki, Witold Lutosławski, Eugenia Umińska, Piotr Perkowski, Irena Sendler. He evaded capture and death by the Germans and their collaborators several times. Beginning in August 1944, Szpilman was hiding out in an abandoned building at al. Niepodległości 223. In November, he was discovered there by a German officer, Captain Wilm Hosenfeld. To Szpilman's surprise, the officer did not arrest or kill him; after discovering that the emaciated Szpilman was a pianist, Hosenfeld asked him to play something. (A piano was on the ground floor.) Szpilman played Chopin's Nocturne in C-sharp minor. After that, the officer showed Szpilman a better place to hide and brought him bread and jam on numerous occasions. He also offered Szpilman one of his coats to keep warm in the freezing temperatures. Szpilman did not know the name of the German officer until 1951. Despite the efforts of Szpilman and the Poles to rescue Hosenfeld, he died in a Soviet prisoner of war camp in 1952.