Watch the Chicken Pickin': Rhythm 1 online guitar lesson by Joe Dalton from Big Twang

This rhythm part is similar to a standard root and fifth bass with chords on the second and fourth beats. Adding the flatted seventh as pick up notes sets the groove and feel for other soloists or singers.
This rhythm part may be quite busy for a recording session, but in a live situation, especially in a smaller band it can be quite effective.