My lessons with Moscheles proved highly interesting and profitable, and sometimes amusing as well... Chopin and Schumann were the most advanced composers he admitted for study in his lessons, and I remember well, playing once a phrase of Beethoven's in a some-what rubato style, his gently chiding me and innocently saying, "My dear sir, you may do that with Schumann or Chopin, but not when you play Beethoven or me"