Overall Rating: 3.0 (of 5)
Pinky Dexterity/callus Builder
On the way down, start each group of 4 with your pinky.(12,11,9,7) On the way back up, slide the pinky.(5-7,7-9,9-11,11-12) I practice it at about 100, and repeat over and over. You can do it on any string, it's just the major scale on one string.