… and composer Vyachesla v Gryaznov on Saturday, Nov. 10. The performance, organized by senior lecturer of Russian … Vasilyevich Rachmaninov. Saturday’s program included 10 Preludes, Op. 23 and “Six moments musicaux,” Op. 16. … piano department. Titus noted the difficulty of the 10 Preludes and commended Gryaznov’s technical ability. …