Absolutely not trivial, I know, but it would help me play my timpani rolls 
Hi @Neil
Actually I’ve considered this before - it’s basically a CC controlled expression filter right?
Brad
errrr… I fink so. 
Any new MIDI event will have its velocity replaced by the current CC value.
It’ll be so very cool for velocity layered sounds (particularly drums) and physical modelled instruments where velocity shapes the sound.
Ah ok. I was more thinking of scaling down the note velocity according to the cc value position.
Could be an option I guess