コンスタンチン・スタニスラフスキー
At the invitation of Constantin Stanislavski, Petrov taught at the Stanislavski Opera studio from 1925 to 1929. He also taught at other music institutions and continued his work at the Bolshoi theatre until 1936. His last performance was at the Bolshoi theatre in June 1936 as Vasily Sobakin in the opera The Tsar's bride by N. Rimsky-Korsakov.