Watch the Finger Workout online guitar lesson by Brad Carlton from Chord Studies: Jazz Turnarounds Vol. 2
Like in our previous example, we have Am7 - Ab7 - Gm7 - Gb7, but we're playing them on the 2nd, 3rd and 4th strings in root position. You'll notice that there is a common tone, C, between both chords here. This study makes for a great keyboard-style finger exercise.