Although it is an extremely rare example combining a concerto movement and a fugue, based on its musical content, it is not considered to be a work by Bach.

The concerto designates the tutti sections as 'Andante' and the solo sections as 'Allegro'. The first 'Allegro' and the second one feature an exchange of parts between the hands. However, the tutti does not immediately return, and continuous repetitions of triads and brilliant passage work persist endlessly. Such a style, whether in keyboard music or chamber music, is not characteristic of Bach's works.

The subject of the fugue also bears little resemblance to Bach's typical subjects. Moreover, contrapuntal development is almost entirely absent, the voice writing is extremely free, and toccata-like runs and repeated chords played by both hands are inserted throughout.