Goofs

When Shostakovich imagines Stalin speaking to him on his deathbed, the position of his head moves between shots.

In the final shot of Shostakovich playing piano, Ben Kingsley is clearly miming.

At 1:41:24, during the press conference in New York, the character seated beside Robert Urquhart has an unmistakably 1980s haircut, although the scene takes place in 1949.