In D major, in binary form.

A [a (measures 1-8) + a1 (measures 9-16)]

B [b (measures 17-24) + a2 (measures 25-32)]

In section A, a flowing melody in eighth notes is played by the right hand for 8 measures, then imitated by the left hand for 3 measures, eventually concluding with a brief exchange of eighth notes between the left and right hands. This basic structure is similar in section B, but measures 17-20 differ in that they ascend through a sequence. From measure 25, the theme returns, but similar to section a1, the melody is played by the left hand, eventually concluding with a brief exchange between the left and right hands.