Originally Posted by Avantasian

Yeah that's true. He does that again since the Hand tour.

But there are two reasons I thought this can't be Dave only:

a) the organ in this version is quite prominent in the mix and sounds different to the organ-sound Dave uses usually.
b) in the calm part of the song you can hear Dave clearly play piano both handed. He wouldn't be able to play these organ licks while doing this. He'd need a third hand