E minor, 3/4 time.

It possesses a musical character akin to an "arioso," which is intermediate between a recitative (narration) and an aria (singing). Although written in a contrapuntal style, its relatively free structure reveals the character of a "fantasia," which was the original name for "sinfonia."

It consists of four theme expositions. Following the initial first exposition, in the second exposition (from m. 14), the theme enters in the reverse order of the first exposition (middle voice → upper voice), and a new counter-melody is combined. At the beginning of the third exposition (from m. 25), the key of D major and the rest in the lower voice announce the start of the latter half of the piece. After the theme is presented without interruption, it returns in the tonic key at m. 37 (fourth exposition). Here, all three voices seem to overlap in presenting the theme, emphasizing the concluding section.