" I was a guest in the home of a conductor when I was in my early twenties. They turned on the gramophone and played a popular record of a foxtrot. I liked the foxtrot, but I didn't like the way it was played. I confided my opinion to the host, who suddenly said, 'Ah, so you don't like the way it's played? All right, if you want, write down the number by heart and orchestrate it and I'll play it. That is, of course, if you can do it and in a given amount of time: I'm giving you an hour. if you're really a genius, you should be able to write it in an hour.' I did it in 45 minutes. "

― Dmitri Shostakovich , Testimony: The Memoirs