Grumpy_Mike:
The tricky part of this is the velocity sensitivity, or as you call it pressure.
The term "pressure sensitive" might also mean "aftertouch" . This might be channel aftertouch where there is one value for the whole instrument (pressure sensor for the whole keyboard) or polyphonic aftertouch (pressure sensor for each key). Guess which is even more tricky than velocity sensitivity. 
See: Aftertouch | Electronic Music Wiki | Fandom