Watch the Example 11 online guitar lesson by Brad Carlton from Guitar Lab: Boogie-Woogie
This example has voice #3 moving step-wise through the A mixolydian mode. The chords are A, Bm/A, Em/A (A9no3) and Bm/A; all coming from A mixolydian. Because you're dealing with five voice chords in this example, break them up to provide a less dense texture. This will be accomplished by examining picking hand options. Try playing all combinations of voices.