I am learning this piece as part of my summer repertoire, and I have a question concerning the Lassan: after the first fast run (going from G# above middle C to a very high E down to several B's) it goes through about 16 measures, then does to measures of trills. After these trills, there is a section of 6 measures of 32nd notes. I have a lot of trouble playing this part, and I was wondering if anyone had any advice.