Phantom MIDI Output in Q&A Posted January 2, 2021 Thanks for your reply - don't worry, the Microsoft synth is meant to be a temporary starting point! Unfortunately, switching these two tracks to ANY other synth seems to have the same effect, and like I say, once I switch them away, the option to switch them back isn't there. Are you saying that it's a known problem with the Microsoft synth to have certain tracks output to an unfindable output? I guess if I knew what was making these two specific tracks output like this, then that would be a good start! Thanks again.