Question: Il trovatore and Lady Macbeth of the Mtsensk District, are which type of theater?
Context: The War Symphonies: Shostakovich Against Stalin (sometimes titled Shostakovich Against Stalin: The War Symphonies) is a 1997 documentary film about Soviet composer Dmitri Shostakovich.  It focuses on the period between 1936 and 1945, during which Shostakovich composed his Fourth, Fifth, Sixth, Seventh, Eighth, and Ninth Symphonies, but also briefly discusses other works in the composer's oeuvre, such as his "Lady Macbeth of the Mtsensk District. Katerina Izmailova (Russian: Катерина Измайлова ) is a 1966 Soviet film adaptation of Dmitri Shostakovich's opera "Lady Macbeth of the Mtsensk District", directed by Mikhail Shapiro.  It was entered into the 1967 Cannes Film Festival. 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.  The libretto, jointly written by Alexander Preys and the composer, is based on the novel of the same name by Nikolai Leskov.  (The opera is incorrectly named "Lady Macbeth of Mtsensk" on several commercial CD and DVD recordings.) Lady Macbeth of the Mtsensk District (Russian: Леди Макбет Мценского уезда ) is an 1865 novella by Nikolai Leskov.  It was originally published in Fyodor Dostoyevsky's magazine "Epoch". Il trovatore (] ; Italian for "The Troubadour") is an opera in four acts by Giuseppe Verdi to an Italian libretto largely written by Salvadore Cammarano, based on the play "El trovador" (1836) by Antonio García Gutiérrez.  It was Gutiérrez's most successful play, one which Verdi scholar Julian Budden describes as "a high flown, sprawling melodrama flamboyantly defiant of the Aristotelian unities, packed with all manner of fantastic and bizarre incident." Lady Macbeth of the Mtsensk District or Lady MacBeth of Mtensk may refer to: Siberian Lady Macbeth (Orig.  Sibirska Ledi Magbet), also translated as "Fury Is a Woman", is a 1962 film directed by Andrzej Wajda, based on the novella "Lady Macbeth of the Mtsensk District" by Nikolai Leskov. Lady Macbeth is a 2016 British drama film directed by William Oldroyd and written by Alice Birch, based on the novel "Lady Macbeth of the Mtsensk District" by Nikolai Leskov.  It stars Florence Pugh, Cosmo Jarvis, Paul Hilton, Naomi Ackie and Christopher Fairbank.  The plot follows a young woman who is stifled by her loveless marriage to a bitter man twice her age. Alexander Preis (Russian: Александр Прейс ; 1905–1942) was a Russian writer of numerous plays and libretti, including those for Shostakovich's operas "The Nose" and "Lady Macbeth of the Mtsensk district". Muddle Instead of Music: On the Opera "Lady Macbeth of the Mtsensk District" (Russian: Сумбур вместо музыки – Об опере «Леди Макбет Мценского уезда») is an editorial that appeared in the Soviet newspaper "Pravda" on January 28, 1936.  The unsigned article condemned Dmitri Shostakovich's popular opera "Lady Macbeth of the Mtsensk District" as, among other labels, "formalist,” "bourgeois", "coarse" and "vulgar."  Immediately after publication rumors began to circulate that Stalin had written the opinion.  While this is unlikely, it is almost certain that Stalin was aware of and agreed with the article.  "Muddle Instead of Music" was a turning point in Shostakovich's career and factored into his public withdrawal of the Fourth Symphony some months later.  The article has since become a well-known example of Soviet censorship of the arts.
Answer: opera