http://www.guitarator.com/chords/add-chords Guitar and music theory tools, lessons, webapps, articles. Tue, 06 Jan 2009 23:23:45 +0000 http://wordpress.org/?v=2.6 http://www.guitarator.com/chords/add-chords#comment-147 Guitarator » Blog Archive » 9th, 11th, and 13th Chords Fri, 12 Oct 2007 14:53:05 +0000 http://www.guitarator.com/chords/add-chords#comment-147 [...] Next, we also need to keep the dominant seventh, the F. This one's a little less obvious, and it comes from a rule: high-numbered chords always contain the dominant seventh. Yes, it's another one of those arbitrary rules that we just have to live with. (Otherwise it would be called an "add13" chord. Read more about "add chords.") [...]