The Three Apostles of Russian Music: The Soviet Avant-Garde, Gregor Tassie, Lexington Books. I started this blog because I had discovered that I not only loved Prokofiev and Shostakovich, I also loved their lesser-known, very talented but persecuted colleagues, such as Nikolai Roslavets, Gavriil Popov and Alexander Mosolov. I was determined to do what I could to help others discover these composers.