A five string guitar tuning
Common triads and sevenths are based on two simple barre shapes that are easy to play, spaced well, suited to smooth voice leading, and sound good with distortion.
Notes are numbered by scale degree; the root, third and seventh of each chord are coloured.
The tuning is highly irregular but there are still many recurring intervals:
perfect fifths (G–D, D–A, F–C), minor thirds (D–F, A–C), and minor sevenths (G–F, D–C). These produce repeating patterns useful for visualising and playing.