March 19, in the Chamber hall of Moscow international House of music hosted a concert "In unity is strength." The program was attended by the soloists of the folk music Orchestra of the Bulgarian national radio under the leadership of Dimitar of Christ and the State orchestra "the gusli players of Russia" Moscow regional state Philharmonic society (artistic Director of the orchestra is people's artist of Russia, Professor Yury Evtushenko, chief conductor – honored artist of Russia Maxim Evtushenko, conductor, arranger – the honoured artist of Russia Yury Pushkarev). A musical evening was dedicated to the 140th anniversary of the liberation of Bulgaria from the Ottoman yoke.

The Bulgarian composer and conductor Dimitar Christoff and "gusla players of Russia" has long ties creative friendship. Concert "In unity is strength" has become another confirmation of this Union.