At the 12th Congress of the Communist Party of Ukraine, Moscow-appointed leader Pavel Postyshev declared that "1933 was the year of the defeat of Ukrainian nationalist counter-revolution." This "defeat" encompassed not just the physical extermination of a significant portion of the Ukrainian peasantry, but also the virtual elimination of the Ukrainian Autocephalous Orthodox Church clergy and the mass imprisonment or execution of Ukrainian intellectuals, writers and artists. Ukrainian music ensembles had their repertoires severely restricted and censored. Foreign tours by Ukrainian artists were canceled without explanation. Many artists were arrested and detained often for months at a time without cause. After not receiving any pay for many months, many choirs and artistic ensembles such as the Kiev and Poltava Bandurist Capellas ceased to exist. Blind traditional folk musicians known as kobzars were summoned from all of Ukraine to an ethnographic conference and disappeared (See Persecuted bandurists).