In these years Tartini wrote” “Rules to get to know how to play the Violin well”, a text published posthumously in Paris with the title of Traité des Agréments de la Musique. In this work are found most of the teachings of the Master of Nations on improvised ornamentation. Starting from the phenomenon of the “third sound”, he studied the laws of acoustics, coming to theorize never-proven connections between physics and metaphysics.