Shostakovich called his Fifth Symphony “a Soviet artist’s response to just criticism” – but then, in Stalin’s Russia, he didn’t have much choice, and the music tells a far darker story. Tonight, Mirga Gražinytė-Tyla explores every facet of a 20th-century icon – from the razor-sharp wit of the First Piano Concerto, played by Russian sensation Anna Vinnitskaya, to the deliciously tuneful The Limpid Stream, one of the works to which Stalin had taken exception.