A note about: starting at 0:09 we can see the real time use of the four pallete sliders.
Each patch can have up to four individual tones.
This is a resource many new synths like to show at their demos but this often go unforgotten on the JD-800.
So it is possible to create a path with four different tones and choose what you want play in real time.
But just to remember, the effects are unique for all. Because this the only I miss at the JD are a set of sliders to real time control of the effects area (one of the best for decades).