 There were also extremely popular operas by the Belgian/French André Ernest Modeste Grétry that were widely performed, including in Kuskovo and Ostankino theatres, where they were given with participation of the famous serf-soprano Praskovya Zhemchugova at the private opera of Nikolai Sheremetev.Catherine II sent some domestic composers like Berezovsky and Bortniansky abroad to study art of music composition and later they produced some operas in Italian and French.And only at the beginning of the 1770s the first modest attempts of the composers of Russian origin to compose operas to the Russian librettos were made.