A "jazz blues" uses the fastest meter, 175 beats per minute or more, with both seventh and minor seventh chords, plus "two-five" (IIm/V-chord) and optional "three-six" (IIIm/VI-chord) changes. Begin in bar one by stating the root chord, then switch to the IV-chord for bar two before two more bars of root chord in bars three and four. Bars five and six state the IV-chord again, then bar seven goes back to the root, but bar eight substitutes a IIIm/VI for the root, splitting bar eight between two beats of the IIIm-chord then two beats of the VI-chord. Bar nine and ten echo the IIIm/VI change slid down two half-steps (frets) to make the IIm/V-chord change, but the beat is back to a normal four-beats per chord. Bar eleven returns to two-beats per chord starting with the root chord for two beats then changes to the VI-chord for two beats, then in bar twelve the IIm/V-chord change is restated, but this time at two beats per chord.
