Disc representing the entire handle an analog manner stringed musical instrument and displaying several transposable elementary music data.

摘要

Tool, in the context of learning, improvisation or composition with any stringed musical instrument having a handle and viewing on all of this mode, tones, scales, intervals and chords necessary for the performance of music. It consists of a base disc divided into twelve equal sectors schematically illustrating the handle of the instrument, its frets and strings of circular and infinitely, and one or more transparent discs, superimposed on the bottom disc, give information on each box that is seen through. This information is transposed for each existing note on the neck of the instrument.