I watched the program and it was well done. However, I am having a little trouble seeing how using the SX900 (or another keyboard) with the SD90 as shown would be practical for a live entertainer. AJ showed certain parts being shut off on one unit so the other could replace those sounds (using the drums on the Ketron and the guitars on the Yamaha for example). Maybe I am missing something, but wouldn't such a system require a live performer to use two sets of registrations to be practical?
I dont think this is practical for on stage..
But since the majorrity of arranger players are home players..
Its just a great journey to undertake for a homeplayer...