Dnj, what you hear is not a smf but a style.
You don't see it, but he is playing the chords with his left hand

he is using a Novation Launchkey 61 midi master keyboard, and is selecting the variation A B C D , fill in, Ending.. with a physical button

The new thing here is to get the master keyboards buttons to light according to what you are doing

But you are right the same buttons can also go to smf markers