What Dmitri Shostakovich opera (Opus 29) was attacked under direct orders from Joseph Stalin?
Symphony No. 4 (Shostakovich):  In January 1936, halfway through this period, "Pravda"—under direct orders from Joseph Stalin—published an editorial "Muddle Instead of Music" that denounced the composer and targeted his opera "Lady Macbeth of Mtsensk". Lady Macbeth of the Mtsensk District (opera): Lady Macbeth of the Mtsensk District (Russian: "Леди Макбет Мценского уезда" , or "Ledi Makbet Mtsenskogo uyezda") is an opera in four acts and nine scenes by Dmitri Shostakovich, his Opus 29.
Lady Macbeth of Mtsensk