Negative - should we ever meet in person, drinks are on me. 
This was not working in the 2nd build but seems to be fixed in the 3rd build that fixed the MI.$ 0.
Akai Pro Advance 49
So your ‘process events in window script’ helped me figure it out, though it was not actually sending multiple CCs when adjusting a single. What was oddly happening is that I was connecting to teletype via the 2>1. When connected to the 2>1, there is some sort of weird bi-directional jitter going on with MIDI CCs. No clue what’s happening here, as nothing weird happens with the 2>1 with other devices. I think we can confirm Akai Advance 49 works now, when I connect directly to teletype (surprised my old rev teleype powers this thing with its color TFT and huge multi-color LED drum pads). See video for what happens when connected via 2>1.
More Confessions/Device testing
- Roland Juno-G does not seem to work (with teletype or per|former)
- MAudio Venom does not seem to work with teletype but does work with per|former
And Then…
I thought I’d actually try to do something a little more advanced and maybe useful. This is an ER-301 chain preset and teletype scene for an 8 voice polyphonic piano with velocity sensitivity that you can play with attached midi controller. It is set up to be last note priority but I have not actually implemented the voice stealing yet - works fine if you don’t exceed 8 notes.
It’s actually working quite well! This is something I haven’t been able to do with modular yet. I could do 8 voice poly, but not with velocity per voice too - that would require a MIDI–>CV converter with 24 CV outs which I don’t have. Until now (kind of) with i2c.
If anyone wants to try it, I think the most fun screens to watch and understand what’s going on are the pattern view on teletype, and the hold mode view on ER-301. Note that if you need to implement an octave transpose to put middle C where you want it, that’s in script 3. Just add or subtract some volts (V). I subtracted 2.
SC.CV + J 1 - MI.NV V 2
I recommend to put the .wav and .slc in /ER-301/samples unless you want to go re-attach the wave file across 8 sample players. I have only tested this on ER-301 v 0.5.03 48kHz version.
Poly 8 Piano ER-301.zip