Three stringed fretted musical instrument

摘要

The disclosed musical instrument is a fretted musical instrument with three strings wherein the fretboard has frets (1) installed at positions corresponding to notes of a diatonic scale with the addition of frets at positions corresponding to 10 semitones from the nut and 15 semitones from the nut, and visual fret line markers at all other semitone positions (3). The fretboard is marked with fret position markers (7) according to the musical interval from the nut (2), rather than the actual number of frets from the nut.