I am absolutely convinced that when creating these demos, Yamaha uses the same synth engine that the keyboard has but with

1. external instruments more capable of expressing the feel of the real instrument, and

2. superb professional engineering via external sequencer.

I'm sure that Yamaha creates its styles and demos with 88 weighted key digital pianos and midi guitars and midi brass and wind controllers.

I'm also sure that they use sequencing programs like XG works and computer sequencing programs.

There's nothing wrong with doing this to make a demo. We are free, if we have the same resources, to make demos of similar quality, as the PSR2000 has a synth engine capable of creating these sounds.

Larry