Who invented the tuning system for the piano we know today?
1) “The first Meantone tunings are described in late 16th century treatises by Francisco Salinas and Gioseffo Zarlino. Salinas (in De musica libra septum) describes three different mean tone temperaments: the 1/3 comma system, the 2/7 comma system, and the 1/4 comma system. He is the likely inventor of the 1/3 system, while he and Zarlino both wrote on the 2/7 system, apparently independently. Lodovico Fogliano mentions the 1/4 comma system, but offers no discussion of it. These formulations were often more theoretical than practical, as scientific methods to precisely determine the pitch of a string from its physical attributes were inadequate, and tuning had to be done by ear. For instance, to achieve the 1/4 comma system Salinas recommends tuning the 5ths as low as the ear will allow. Although Meantone is best known as a tuning environment associated with earlier music of the Renaissance and Baroque, there is evidence of continuous usage of meantone as a keyboard temperament well in
