The “XII Sonate à Flauto Traversière Solo & Basso” were published in 1732. The front page reads “Dedicated to the most illustrious Nicola Romswinkel. By Pietro Locatelli from Bergamo. Opera II. Amsterdam, published in self”. It is curious that a famous violin virtuoso such as Locatelli, published his first sonatas for the German Flute. Indeed, modern musicology tends to give a limited importance to the work not finding formal or stylistic innovations worthy of interest. Certainly the composer mastered the instrument, as is witnessed by the technical quality of the work. Furthermore, the Author taught the use of the instrument to Mr. Romswinkel, an amateur flute player, to whom the same Opera II is dedicated (“... as you made me the honour of being a disciple of mine...”).