Thanks for that piece. If anyone ever asks why theory is useful, this is a direct reason why. You can play the same three chords over and over again, but I think it sounds better to when you can slightly tweek the chords your playing to give a distinct sound. question about your lesson though. Do you have to use your ear to determine which notes are the most important in a chord or is there a formula for this? Also, do you know if single notes can be substituted? Thanks again for your feedback it's been a big help.