This is lesson six of the pyramids variations, the 32 by a BA version. Now in order to make our pyramids performance any longer without simply repeating ourselves, we need some new music. And this is the new B section, which then gives us the 32 bar ABA chord structure, well known in popular song, especially jazz standards. What's the performance a couple of times to see what all this is leading, then open the lesson PDF and the web page for the link to the article.