The changes
The hands
Left hand then right, as the source writes them. A pianist's voicing routinely carries a colour the chord symbol does not spell — a flat ninth over a dominant, a ninth on top of a seventh chord — so the notes printed under each keyboard are what is actually played, rather than what the symbol alone would predict.
Dm11
chord 1
LH D2 A2RH G4 C5 F5
G13sus
chord 2
LH G2 D3RH C4 F4 A4 E5
Cmaj9add13
chord 3
LH C1 G2RH E4 A4 D5 G5
Open quartal voicing, let ring