Watch the 8 On the Floor online guitar lesson by Brad Carlton from Chord Studies: Evolving Blues Vol. 1
We shift from a 12 bar blues to an 8 bar blues. This one just uses 7th chords, but you will notice that you get different sounds because of the interesting voicings. This progression reminds us that it is not always a matter of doing crazy extended diminished and augmented chords to make something sound interesting. It can be accomplished by playing simple chords but using more innovative chord shapes.