slow, funky, groovin' laid back music

Looking for something instrumental to put on late night, quiet with deep bass and soul. Not easy or "smooth" jazz, but more hip hop influenced. I like theivery corporation, but would like to hear more afro/jazz influence. Does that make any sense? Something like People Under the Stairs or Digable Planets or Erykah Badu or Jill Scott, but without the words. Recommendations welcome. Thanks