The Analog Keys' keyboard can be split up into zones where you can play different sounds in each zones. One zone can be used for an internal sound, another zone could be playing an external synth, and a third zone could be playing an internal drum kit etc. A lot of people have asked how to set this up, so here, finally, I'm trying to break it down into (hopefully) easy to grasp steps.
I'm sure you can use it more creatively than what I'm doing here. But these are the basics. I hope you'll make use of it, if you've got an Analog Keys, or an Analog Four. It is possible on the Analog Four as well. You just have to find the menu in there first ;-)
OK, cheers for now!