The Private Opera, also known as: The Russian Private Opera ; Moscow Private Russian Opera, ; Mamontov's Private Russian Opera in Moscow ; Korotkov's Theatre ; Vinter's Theatre ; Private Opera Society ; and Solodovnikov Theatre was a private operatic enterprise, a company established in 1885 by Russian industrialist and philanthropist Savva Mamontov, who staged the operas, conducted the orchestra, trained the actors, taught them singing and paid all the expenses. Wikipedia