Hi. I 've been searching for information about casio px 5s split button. Does it exist or can be mapped to any other button.For example: I want to play song which start with piano sound and when drummer in my band start to play i need to start playing bass with my left hand and want to split the keyboard exactly in that moment quick. On others keyboards i ve played there is split button which i can turn on and off fast , and when it's turned off there is one sound from lowest to highest key and when turn on the split it split the keyboard easy . I hope you understand my question? Sorry about my english.