In 1946, Andrei Zhdanov issued a decree, nominally aimed at Vano Muradeli's opera The Great Friendship, but in actuality against a wide range of composers who were guilty of 'formalism'.
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In November 1979 after several performances of his works in Paris, Cologne and Venice, Suslin was publicly denounced and blacklisted as one of the "Khrennikov's Seven" at the Sixth Congress of the Union of Soviet Composers for unapproved participation in some festivals of Soviet music in the West.