Music and Time Annotation << Back Russian German – Yuri Karlovich Arnold D.I. Topilin The article is devoted to one of the now poorly known figures of Russian musical culture of the XIX century – a music theorist, music critic, choir teacher, composer Yuri Karlovich Arnold (1811–1898). The basic facts of the life and work of a musician, «to embrace the musical XIX century». In different periods of Arnold communicate and collaborate with outstanding representatives of Russian culture: M.I. Glinka, A.S. Dargomyzhsky, A.N. Serov, P.I. Tchaikovsky, V.F. Odoyevsky. For many years, Arnold was friends with Franz Liszt. The article presents the evolution of music theory and worldview of ethnic Germans Arnold, who in the 1840s increasingly shifted to the pro-Russian, anti-German position in understanding the future path of development of Russian music: composer creativity, performing arts, music critics and music theory science. Keywords: Yuri Arnold, Russian German, musical theoretical positions, «a Greek twist», «choir singing». Contacts: E-mail: d.i.topilin@gmail.com Pp. 32-36.