@kevgermany A rootless voicing is a harmony term from jazz piano and guitar, It merely means a chord such as G9 voiced without the root, in this case G. In most cases the bass player will supply the G so the notes you have to play around with are 3, 5, 7, 9 of G dominant, viz. B,D,F,A.
Pianists and guitarists will often use a different order of the notes to give a wider sound spread over greater than one octave. Sax players can also do this. Returning to the triad theme, note that 3, 5, 7 of G9 (or G7) is B diminished triad, and 5,7, 9 of G9 is D minor triad. This provides endless ways of producing great sounds, particularly if you introduce chromaticism. For example use a semitone above or below the initial pitch to give a triad with a semitone intro. Played in swing feel you now have 8 notes per bar and a multitude of different ways to play them. And not a lick in sight!
Bill