However, the 9th could possibly be added. So to play a dominant 13 chord on the guitar, a normal voicing would be 1-3- b7-13. The root (1), when played by the bass player or the pianist can be omitted. The 5th can be skipped, it is not the most interesting and important note in this chord. It is better not to skip the third nor the 7th, since this would spoil the color of the 13th chord. In this stack of tones (the 13th chord), the interval 3-11 (E-F for C major) is considered as dissonant so generally the 11 is omitted to avoid this dissonance. Just add another third and you get a dominant eleventh chord (11) and a last third gives you finally a dominant thirteenth chord (13). Adding another third to a dom7 chord gives a dominant ninth chord (9).
Adding a third to this triad gives a dominant 7 chord (1, 3, 5, b7). When building a dominant chord, you generally stack thirds on top of each other and give a name to this chord related to the number of steps from the root note to the highest :Ī triad is formed with a root (1), a third (3) and perfect fifth (5).
