Thanks Mario, I'll start there.
Clinton.
Some time has passed: I looked, and the only thing that's possibly appropriate - MIDI CONTROL association (3.6 in the manual) - is I think to do with external control i.e. outside ST, of its many sound-moulding possibilities; I haven't any idea about all that stuff yet, but I certainly didn't see where it might be used to make a change at a certain place in the tune, rather it seems to be all about modifying the sound itself.
I'm more or less guessing here, so if the above sounds all wrong then please (anyone) tell me so.
BUT, and here's the happy bit, your reply got me thinking: OK If CC11 doesn't do the job, what about CC7 then? It turns out to work quite well. I've come across warnings against using it as a volume adjust mechanism inside tracks before, but for a simple move at least it seems to be alright and if ST listens to the instruction and behaves itself, then there you are.
Clinton.

Last edited by clinton; 02/16/15 08:56 PM.