Post History

Why did Mravinsky refuse to conduct the premiere of Shostakovich's Thirteenth Symphony in 1962?

The emboldened sentence below isn't evidenced on Wikipedia. Is it true? If so, why? 

[Yevgeny Mravinsky - Wikipedia](https://en.wikipedia.org/wiki/Yevgeny_Mravinsky)

> The music of [Dmitri Shostakovich](https://en.wikipedia.org/wiki/Dmitri_Shostakovich "Dmitri Shostakovich") was closely associated with Mravinsky, beginning with conducting the world premiere of the composer's [Fifth Symphony](https://en.wikipedia.org/wiki/Symphony_No._5_(Shostakovich) "Symphony No. 5 (Shostakovich)"). The conductor would subsequently lead the world premieres of the [Sixth](https://en.wikipedia.org/wiki/Symphony_No._6_(Shostakovich) "Symphony No. 6 (Shostakovich)"), [Eighth](https://en.wikipedia.org/wiki/Symphony_No._8_(Shostakovich) "Symphony No. 8 (Shostakovich)") (which Shostakovich dedicated to Mravinsky), [Ninth](https://en.wikipedia.org/wiki/Symphony_No._9_(Shostakovich) "Symphony No. 9 (Shostakovich)"), [Tenth](https://en.wikipedia.org/wiki/Symphony_No._10_(Shostakovich) "Symphony No. 10 (Shostakovich)"), and [Twelfth Symphonies](https://en.wikipedia.org/wiki/Symphony_No._12_(Shostakovich) "Symphony No. 12 (Shostakovich)"), as well as the [Song of the Forests](https://en.wikipedia.org/wiki/Song_of_the_Forests "Song of the Forests"), [Violin Concerto No. 1](https://en.wikipedia.org/wiki/Violin_Concerto_No._1_(Shostakovich) "Violin Concerto No. 1 (Shostakovich)") , and [Cello Concerto No. 1](https://en.wikipedia.org/wiki/Cello_Concerto_No._1_(Shostakovich) "Cello Concerto No. 1 (Shostakovich)"). **His refusal to conduct the premiere of Shostakovich's [Thirteenth Symphony](https://en.wikipedia.org/wiki/Symphony_No._13_(Shostakovich) "Symphony No. 13 (Shostakovich)") in 1962 caused a permanent rupture in their friendship. **Of the remaining Shostakovich symphonies which he did not premiere, Mravinsky only performed (and recorded) the Seventh, [Eleventh](https://en.wikipedia.org/wiki/Symphony_No._11_(Shostakovich) "Symphony No. 11 (Shostakovich)"), and [Fifteenth](https://en.wikipedia.org/wiki/Symphony_No._15_(Shostakovich) "Symphony No. 15 (Shostakovich)").[\[2\]](https://en.wikipedia.org/wiki/Yevgeny_Mravinsky#cite_note-2)[\[3\]](https://en.wikipedia.org/wiki/Yevgeny_Mravinsky#cite_note-Mravinsky_Disc.-3)