Play the 13♯11 chord on guitar
The 13♯11 chord is the maximum extension of the 7♯11 chord, combining all Lydian dominant mode extensions with the thirteenth.
Chord composition
| I | III | ♭VII | IX | ♯XI | XIII |
| Root | Major third | Minor seventh | Major ninth | Augmented eleventh | Major thirteenth |
| 0 | 4 | 10 | 14 | 18 | 21 |
Formula 1 - 3 - ♭7 - 9 - ♯11 - 13
Theory
The 13♯11 chord omits the fifth. C13♯11 = C-E-B♭-D-F♯-A. This chord reflects the complete Lydian dominant scale (IV mode of melodic minor). The augmented eleventh avoids clashing with the third while offering Lydian color. Maximum extension of the dominant chord without ♭9, ♭5 or ♯5 alterations.
Play the 13♯11 chord on the guitar
