Watch the Chord Extensions online guitar lesson by Matthieu Brandt from Chord Cookbook
The chord formula for an add6 chord is 1-3-5-6 for a major chord and 1-b3-5-6 or 1-b3-5-b6 for a min add6. The add6 is a chord you'll find a lot in country and jazz. The min add6 or m6 is not used often. The most frequent use is in a downward progression on a minor chord, with the root walking down to a major seventh, flatted seventh and major sixth. In the second section of this lesson we will take a peek at further extending these chords.