[1] In 1886, he entered Moscow Conservatory, where his teacher was Franz Zimmermann (1818–1891), solo clarinet of Bolshoi theatre.
After graduating in 1890, Rozanov began his career as an orchestral musician in different opera theatres of Moscow.
Rozanov also performed frequently as a soloist and chamber musician, he was the first Russian clarinetist to play the quintets of Wolfgang Amadeus Mozart and Johannes Brahms, and also the Trio pathétique by Mikhail Glinka.
His pupils include Alexander Volodin, Ivan Mayorov and other clarinetists, who later become professors and laureates of different musical competitions.
Rozanov made several transcriptions for clarinet and wrote numerous studies for it.