I have been told to figure out which notes in Mozart's theme are skeletal and which ones are just embellishments before I develop my Theme and Variations.
But I don't know how to tell if a note is skeletal or not. I mean it is easy to see that the 16th notes are embellishments. But what about those 8th note runs in the right hand? Are all of those 8th notes skeletal or only half of them or even less or what?
Everything before the key change is part of the theme I am talking about. In other words, the first 25 bars or so of the piece that are all in A minor is the theme. How am I supposed to tell which notes make up the skeleton of the theme? If I can figure that out, then I can do what I have been suggested to do which is to slowly build from the skeleton to the theme itself and then develop that theme further(similar to what Beethoven did in the finale of his Eroica symphony).
But yeah, how do I figure out which notes are skeletal? Do I look at the bass line and see which notes are chord tones in each measure and decide that those chord tones are the skeleton or what?