I am very familiar with this board. I have the N364. You can make as many splits as you want, but it isn't easy. The best thing to do is go to your combination bank and select a patch (sound) that you know you will not use or want and edit it. You will have to cycle through the parameters and select the sounds you want in your split and assign them to specific keys (low 'E' to 'B' before middle 'C' for on your bass guitar sound for ex.) I'm not at home right now, but you can email me if you need some help later. I also have some old midi files that I created on this board if you want some to practice to.