today's guitar lesson

We didn't go over a specific song today -- he didn't bring one in! Instead we talked a little more about theory. We also reviewed 9th chords - one form with the root note and the other without. We also looked at a chord substitution chart for I IV V. He explained what a "dominant" chord is and how in blues it's a little different than in classical theory. We looked at 11th and 13th chords, on a chart, but didn't practice any. Our playing was focused on 9th chords, and the talking ranged around those areas in theory i mentioned above.