@Sanderxpander Thank you very much for this precise answer. That make me very close to my goal. I had to connect midi in and midi out with one cable and I managed to record it, it also does automation record. That's great! It's a pity that there's no (?) pitch sensitive plugin, but this is still great step further with my project.
 
@iawp I did that and waiting for reply. Will let you know. 
 
@dmbaer Thanks, I looked into this and it's really HUGE 3rd party instruments, and who knows what will the future bring. It's really good to know this. 

I think you may be able to use ReaTune (from the free Reaper VST suite) for realtime pitch tracking. Reaktor also has a few ensembles/tools that do this. That's pretty specialized stuff though. The technology isn't quite there yet to do it as quickly or as discrimininately as the human ear can.

Production process has started, AudioToCC works really good, I use automation write to follow pitch. Midi real time export works fine too, but there's my question. How to forward MIDI signal that goes from DAW (exported from AudioToCC VST) to midi device (keyboard f.i.) and then put it back to DAW to control f.e. Alchemy sampler where I get second layer "chaining" effect. I'm going to try connecting my interface's midi in to midi out on the same channel, that should work, but maybe there's more civilized way :)?
 
 Midi trace is recorded as CC01 : Modulation, and then I can easily route it to any VST in realtime.
 
@Sanderxpander - do you know names of those Reaktor tools?