Actually Meshell and D'angelo is what you END with!
A few to START with, Marvin Gaye "What's goin on" (James Jammerson)
Tower of Power "Soul Vaccination Live" (Rocco Prestia)
Earth Wind and Fire "Gratitude" (Verdine White)
Sly and Family Stone "Stand" (Larry Grahm)
Donny Hathaway "Live" get the import (Willie Weeks)
Aretha Franklin "Live at the Fillmore East" (Jerry Jermont)
You could chew on those for about a year! All that great stuff you hear on D'angelo and Meshell is the product of years of education with the real "old school". This list is by no means complete. Just a starting point, I'm sure plenty will be added.