Rootless ninth chords are ninth chords with the root omitted. Since a ninth chord is formed by stacking another 3ʳᵈ above a seventh chord, removing the root leaves the remaining chord tones unchanged.
Major 7:
1-3-5-7
Major 9:
1-3-5-7-9
Rootless Major 9:
3-5-7-9
The diagrams below show rootless ninth voicings.
Rootless 6/9 Chords
A 6/9 chord combines the 6 and 9 with a major triad.
Formula:
1-3-5-6-9
Rootless Formula:
3-5-6-9
Drop 2 Inversions:
3-6-9-5 • 5-9-3-6 • 6-3-5-9 • 9-5-6-3
Learn More
Learn to locate the extended intervals 9, 11, and 13 anywhere on the fretboard using the Guitar Intervals Unleashed book: Visit https://www.amazon.com/dp/1073714292