Think about piano

[Hanno <shaftoe nurfuerspam de>]

When I was at my old music teacher I investigated some effects of a piano with 
him and I want to tell you some interesting features that are used in some 
common piano-pieces. 

When you press down a piano-key with very low velocity you can hear no sound. 
But the damper of the strings are released, so the strings for those keys are 
ready for swinging. 

Then you press a key some octaves lower than the keys you hold and release 
that. The tone stops - but the still hold down keys on high pitch swing. You 
can hear them like they have been played and hold down. The swing on 
resonance. 

This effect is simulated by no piano-simulator yet. And its the point all 
piano-players make jokes about piano-synths: "They never can do this! Ha!" 
Just like my teacher.

Would be nice if we could do this. How? Any ideas?