Musicology Annotation << Back Grand Duke Constantin Nikolaevich of Russia and Moscow Branch of The Russian Musical Society Moiseev G.A. In this paper some little-known facts from history of Moscow branch of the Russian Musical Society and the Moscow conservatory in which destiny in 1870th years Grand Duke Constantin Nikolaevich has played the important role are shown. Key words: Russian music of the 19th century, Russian Musical Society, Moscow, primary sources. E-mail: gmoiseev@yandex.ru