Abstract: A musical teaching device, which substantially shortens the amount of time which a student requires in order to understand various aspects of playing a stringed instrument, is described. This device is comprised of a grid of intersecting lines which represent strings and frets of a fingerboard of a stringed instrument, an indicator situated in the vicinity of each intersection and representing a corresponding musical note, and a plurality of moveable markers, each of which can be positioned anywhere on the grid and is identified by both a particular color and one or more symbols in order to visually depict a particular aspect of the instrument. These aspects illustratively include fingering of notes, chords and scales; harmony; melody; contrary motion, and rhythm.