Share this post13th Chords!themodernimproviser.substack.comCopy linkFacebookEmailNoteOther13th Chords!Chester HarlanJan 06, 2023Share this post13th Chords!themodernimproviser.substack.comCopy linkFacebookEmailNoteOtherShareKeep reading with a 7-day free trialStart trialAlready a paid subscriber? Sign inPreviousNext