Let's try dividing the piece into several sections. For example, let's consider measure 40 as the end of one section. Generally, the point just before a new theme (subject) appears can be regarded as the end of that section. In this example, measures 41-45 can be considered an interlude-like passage connecting sections.

If we further divide this 1-40 measure section into two, it can be split into measures 1-19 and measures 20-40 (of course, there are many other ways to divide it). Furthermore, if we divide this 1-19 measure section into two, it can be split into measures 1-7 and measures 8-19.

In measures 1-7, where do you feel the highest tension is? While opinions may vary, the author considers it to be measure 4. And in measures 8-19, the author considers the highest tension to be in measure 15. Therefore, the direction should first be towards measure 4, and then towards measure 15.

Next, between measures 1-7 and measures 8-19, which has higher tension? The author feels that measures 8-19 have higher tension. And furthermore, when considering the harmony, measure 29 has even higher tension than measure 15, doesn't it?

Please complete the piece by defining its direction using this method of division.