Stölzel reportedly wrote directly to King Friedrich Wilhelm III of Prussia to publicise his invention, and musical director Gottlob Benedikt Bierey of the Beslau City Theatre wrote in the Allgemeine musikalische Zeitung on 3 May 1815: "Heinrich Stölzel, the chamber musician from Pless in Upper Silesia, in order to perfect the Waldhorn, has succeeded in attaching a simple mechanism to the instrument, thanks to which he has obtained all the notes of the chromatic scale in a range of almost three octaves, with a good, strong and pure tone.
Stölzel reportedly wrote directly to King Friedrich Wilhelm III of Prussia to publicize his invention, and musical director Gottlob Benedikt Bierey of the Beslau City Theatre wrote in the Allgemeine musikalische Zeitung on 3 May 1815: "Heinrich Stölzel, the chamber musician from Pless in Upper Silesia, in order to perfect the Waldhorn, has succeeded in attaching a simple mechanism to the instrument, thanks to which he has obtained all the notes of the chromatic scale in a range of almost three octaves, with a good, strong and pure tone.