"Stalin didn't let anyone in to see him for days at a time. He listened to the radio a lot. Once Stalin called the Radio Committee, where the administration was, and asked if they had a record of Mozart's Piano Concerto no. 23, which had been heard on the radio the day before. "Played by Yudina," he added. They told Stalin that of course they had. Actually, there was no record, the concert had been live. But they were afraid to say no to Stalin, no one ever knew what the consequences might be.
Stalin demanded that they send the record with Yudina's performance of the Mozart to his dacha. The committee panicked, but they had to do something. They called in Yudina and an orchestra and recorded that night. The record was ready by morning. They made one single copy and sent it to Stalin. " (Testimony, 193-4)