Today's piano lesson...improvisation. I do not play anything but classical music on the piano. No Christmas carols. Today, the professor says, I will sing a Christmas song and you must play it on the piano in C major based on what I sing. Jingle Bells. First, play the melody. Then add tonic, dominant and sub dominant chords in the left hand. Then play it as Mozart, Bach (in Canon) and Lizst (octaves, crazy jumps glissandos and scales) would have done it. Fun stuff.