Teaches the formula to find every single chord on guitar. 

Chord Compass for Guitar helps navigate the fretboard by harnessing the power of the CAGED system. This chord training tool shows you five ways to play any major chord and modify into thousands of playable chords. You'll open up the fretboard by learning chord structure and the relationship of chords across the guitar neck.  You'll form connections and understanding of how to play chord inversions, barre chords, and scales in different positions. 

Use the slider on the back of the Decoder to move the shapes along the fretboard!