D major, 3/8 time.

The theme is presented in the opening 12 measures, and its final cadence (measures 11-12) determines the overall structure of the piece. The middle section consists of two parts, each delimited by a cadence in B minor (measures 23-24) and a cadence in A major (measures 37-38), respectively. From measure 43, the opening theme returns, forming the final thematic presentation section. However, at the end of the piece, two cadences are placed: a deceptive cadence (measures 53-54) and a perfect authentic cadence (measures 58-59). The repetition of the coda is unusual in the Inventions. This structure, where the musical character changes with the cadence, is reminiscent of the ritornello form, a principle of the Baroque concerto.