PIAGUI IV

To the tuning list,

I bought a guitar without frets to construct the new Piagui IV guitar. Its harmonies will be finely controlled by partial frets. Two parallel lines of fractional frets make a separation of about 2 millimeters at the first fret and 1 millimiter at the 19th. These fret separations don´t cause any dificult to the correct finger chord positions as it happened with the Piagui I, II and III.

The Piagui IV guitar is an improvement of the harmony showed by the three mentioned Piagui scales.

Ask more information on how were derived its twelve tone frequencies which are going to be used in the piano tuning as well.

Mario.