Saint Petersburg Conservatory
After graduation he worked at the Ministry of Justice in Saint Petersburg. From 1896 to 1898 he studied at Saint Petersburg Conservatory. From 1900 to 1902 he studied composition with the composer Nikolai Rimsky-Korsakov. In 1894 Ossovsky started his career as a talented and prolific musical writer, musical critic and musicologist. Between 1915 and 1918 and 1921 to 1952, Ossovsky was a professor at the Saint Petersburg Conservatory (then Leningrad Conservatory), and in 1937 he became a deputy director there.