I listened to this book on audiobook a few years ago and I loved it - both the book itself and the fact that the audiobook format meant it could include excerpts from the symphony.

It impressed me especially because I went in a bit skeptical that it would be worthwhile - did I really have anything new to learn about Stalinism at this point? - and as it turns out, I absolutely did! And the book was absolutely there to share it with me! While also offering enough background to be accessible to readers with less prior knowledge of Stalinism, which is a really tough balancing act to manage.