Koussevitzky [Kusivéetsky] (Kusevitsky, Kussevitsky), Serge (Sergey Aleksandrovich) (7–14/26–1874, Vyshniy Volochyok, Tver [now Kalinin]; 6–4–1951, Boston). Cond., virtuoso double bassist, publisher, and comp. Grad. 1894 from the Mus.-Dramatic Sch. of the M. Philh., then joined its faculty (1900), teaching double bass. Also concertized and played in the Bolshoi Theater Orch. In 1905 traveled to Berlin and worked with conductors such as K. Muck, Nikisch, and Weingartner. Returned to Russia and…