This is for a project I’m working on where I’m adapting Stenotype for musical live coding (https://github.com/jarmitage/stenophone). The layout it based on measurements of an actual mechanical Stenotype machine, the one depicted in the repository above. It’s currently mapped as a Keyboard but I want to experiment with combining keystrokes and gestures via MPE. Then I’m going to make different live coding mappings and 3D geometric layouts.
You want a single control to send out multiple messages, is that right? No this is not currently possible. You would need to handle this in software, converting note data into keyboard letters.