Tom asked me if there are any changes in the Organ voices.....
Yes, there are now several super articulation organs which were not in the 910 and are from the Tyros4.
Also, Yamaha has many new Piano voices from their acclaimed CFIII $100,000.00 Acoustic Piano. These samples are pure uncompressed samples. There are now 9
"live" pianos compared to the 910 with 3.
There are also a lot of new Tyros4 electric pianos to choose from using the new "real distortion" modeling.