Hi,
See this post which is a similar request.
We cannot change shortcuts but the referenced post will take MIDI In, focus to the correct outgoing application, then send a keystroke 10ms later. It the example, I’m using PC0 as an incoming MIDI trigger and sending Right Arrow to notepad. You will need to change translator 0.0 to send Cnrl-E instead and to focus Ableton Live instead of Notepad.
Steve Caldwell
Bome Customer Care
Also available for paid consulting services: bome@sniz.biz