1. It's called "Abegg Variations," by Robert Schumann, a German 19th-century composer.

2. So actually, if you listen carefully, there are supposed to be five variations on this Abegg theme.

3. What I do first is, I make a lot of little musical ideas you can just improvise here at the piano -- and I choose one of those to become my main theme, my main melody, like the Abegg that you just heard.