主权项 |
1. A stringed musical instrument comprising,
frets installed on the fretboard at positions corresponding to 2, 4, 5, 7, 9, 10, 11, 12, 14, 16, and 17 semitones from the nut of the instrument, and a fret corresponding to the 15th semitone from the nut to allow ease of playing a pentatonic minor scale important in rock-and-roll and blues music wherein visual line markers, flush with or below the fretboard surface, parallel to the frets mark the semitone positions which do not have a fret installed to further improve the ease of playing and learning music on the instrument. |