Daprofe LEFT HANDED Learn Guitar Blues Fret Note Fretboard Map Scales Removable Vinyl Stickers for Electric and Steel String Guitars

The fretboard stickers are laid out is a special way that allows you to master the blues and pentatonic scales. The black dots are notes common to both the A minor and A major scale (you can always play these). The blue dots are notes in the minor blues scale and the yellow dots are notes in the major blues scale. So if you play the black with the blue notes you are playing the A major blues scale If you play the black notes together with the yellow notes you are playing the A minor blues scale. The blues "blue notes" are also indicated with a note symbol(a tail on the dot) if you play the scale without these notes you are playing the pentatonic scale.