Watch the Major Slash Chords online guitar lesson by Brad Carlton from Guitar Lab: Slash Chord Science

This lesson presents an overview of the concept of a major chord over any bass note derived from the chromatic scale. The chromatic scale is presented in appendix A in terms of scale degrees. This appendix also displays the formulas for 21 commonly used scales/modes in music. This information will be valuable for looking at scale possibilities over different harmonies. Diagrams 3a through 3f show the layouts for playing chromatic basslines underneath a C major triad. In the video, I will demonstrate various fingering options necessary for executing these slash chords. Each of these six diagrams applies this chromatic slash chord approach underneath a different inversion of the C triad.