Studio 360 looks back at a country that doesn’t exist any more — the Soviet Union. Kurt Andersen and the writer Svetlana Boym expose the art that was made in secret during the Communist regimes, and find out why some of once-underground artists are nostalgic for those days. Americans remember what it was like when Soviet pianists called a truce at the height of the Cold War. And a cheap Soviet camera finds a growing legion of devoted photographers in the West.