As it shifts up and down the length of the neck, this example can be viewed in relation to all five underlying A minor pentatonic shapes. Make sure that you are aware of each as you progress. Aim to view the contents of bar 22 as a 16-note motif that has been shifted down the neck via a descending slide on the second string using the first finger. Visually, if continued down the length of the neck, this configuration traces out a shape similar to the top of a castle wall. Note that, by using ascending slides throughout, this same castle-wall movement can also be used to travel up the neck.