When I was listening to him.. I couldn't help but think about how this style resembles the gospel bounce in Ab so much. You know that LH rhythmically hitting chords while your RH is playing octaves and 5ths.
At the 1:19 mark he did this..
Going down the keyboard...
Ab, F, Eb, C, Bb, Ab, F, F, Ab, E, E, Ab, D going into a Bb7 chord
I'm adding this one to the toolbox..