The six duetti for two flutes are clear examples from different periods of the life of Wilhelm Friedemann Bach that display a contrapuntal and compositional ingeniousness that makes them among the most difficult flute works of the eighteenth century.
Clearly the difficulty and musicality of the duetti a duo Flauti made a strong impression on Friedemann's contemporaries, and they continue to challenge the technique and interpretive abilities of flautists to this day.