It is in binary form.

A [a (measures 1-4) + a1 (measures 5-8)]

B [b (measures 9-12) + a1 (measures 13-16)]

The key is C major. The theme is an ascending arpeggiated line spanning four measures. This presumably evokes the image of taking flight into the sky. In the b section, it descends, then re-enters the a1 section, ascending again to reach the conclusion.

When ascending, the melody is passed from the left hand to the right hand; when descending, it is passed from the right hand to the left hand. As indicated by the long slurs, the goal is to achieve a smooth transfer between the hands.