Neuhaus was sitting next to him at a performance...that was being badly conducted by Alexander Gauk. Neuhaus leaned over to whisper in Shostakovich's ear: "Dmitry Dmitrievich, this is awful.” Whereupon Shostakovich turned to Neuhaus: "You're right, Heinrich Gustavovich! It's splendid! Quite remarkable!” Realising that he'd been misunderstood, Neuhaus repeated his earlier remark: "Yes,” muttered Shostakovich, "it's awful, quite awful.”
That was Shostakovich to the life.