I'm not really good with posting chords but these partial ones should get u on ur way. These are the Soul Choir Version. You'll have to jazz them up yourself.
B, Db/
/ DbEAb, DF#B
(Repeat about 8 times)
Ab, G/
Gb/ GbBbDb
Ab, G/
Gb/ GbBbDb
Gb,F,E
Eb/ GbBbDb
Both Hands: Ab Ab Ab (2x) Ab, G, Gb, E, Gb, Ab
B, Db/
/ DbEAb, DF#B
(Repeat about 4 times and modulate up to D, then do the same thing and move up to Eb)
Vamp Part
Bass Part: Eb, F, Gb, Ab, Bb, Db,
Right hand move Eb Gb Bb, move your pinky down with each bass part to B then to C.