Tasty Lines Over a Neo-Soul Vamp
Coming to the forefront of popular culture in the mid-1990's, it was overwhelmingly a vocalist's music, represented by a younger, "urban" group of artists and their audience.
At the same time and with some of the same roots, its instrumental cousin - labeled "Smooth Jazz", for lack of a better term - was being dressed up, watered down and marketed to an older demographic, with its own radio format, etc.
What could be argued as being a rough cross-pollination of these two genres has, over time, yielded something definable as "instrumental Neo-Soul", or "Neo-Soul Jazz", with its own unique harmonic vibe.