For the past 300 years, musicians and scientists have puzzled over the unparalleled quality of classical Cremonese violins made by the Italian master Antonio Stradivari. These classical violins have become the benchmark against which the sound of all other violins is compared. There are many theories as to the “secret” of Stradivarius violins. What was obviously first explored was the exact size of the violins and ratio of the parts to each other. Although instrument makers have disassembled their violins, calibrated every dimension of the pieces to within the hundredth of an inch, and replicated the measurements perfectly in new instruments, they have failed to duplicate the Stradivarius magic. It is also well-known that the density of the material through which a sound propagates influences significantly the vibration efficiency of the material, therefore the tonal qualities of the instrument. It is also a widely held belief that Stradivari’s well-guarded varnish formula was not just a protective coating of the instrument, but actually the most important secret to his violins.