Music and Time Annotation << Back The Great Unknown Mechislav Weinberg A.S. Voskoboynikova The paper covers some important aspects of one of the most mysterious composers of XXth century M.S. Weinberg’s life and work. Using the available biographical material and analyzing some of his works, in particular the song cycle «Jewish Songs» and the piano sonata № 4 the author wants to draw reader’s attention to the significance of this phenomenon in the history of musical culture. Key words: M.S. Weinberg, «Jewish Songs», piano sonata № 4. E-mail: noire85@gmail.com