Don, Use more Minor 7th chords with a b5 and 4 or 5 passing chords and a few turn a rounds with the bass vamping using the 5th on the 2nd and 4th beats and Randy on sax and I could listen all night.
Ha ha! The devil made me say this.
Sounds real clean to me for a live performance, and I know you don't use a pitch control. IMO it sounds fine friend.
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I'm not prejudiced, I hate everybody!! Ha ha! My Sister-In-Law had this tee shirt. She was a riot!!!