Círculo Beliáyev
César Antonovich Cui (; ; 13 March 1918) was a Russian composer and music critic, member of the Belyayev circle and The Five – a group of composers combined by the idea of creating a specifically Russian type of music. As an officer of the Imperial Russian Army he rose to the rank of Engineer-General (equivalent to full General), taught fortifications in Russian military academies and wrote a number of monographs on the subject.