Watch the Incorporating 13th online guitar lesson by Jeff Beasley from Shred Ahead Blues Rock

By adding the thirteen, a one and three, we extend the eleventh into a thirteenth. The addition of these new tones gives our melodies new color and a bit of flair not present in the eleventh. The tones present in this thirteenth arpeggio can also be viewed as an f# minor arpeggio. That being the case think of all the f# minor arpeggios you may know and use them as A thirteenth arpeggios instead. Most rock and blues players are going to be acclimated to straight minor. Using these arpeggios now as thirteenths adds tremendous depth and color to a common minor lick.