Real-time Interfacing using a Digital Audio Workstation with MuseScore

• Apr 23, 2025 - 22:46

I'm trying to send MIDI out from MuseScore during real-time playback using the IAC Driver (on macOS) into my DAW. I remember this used to work in MuseScore 3 — I could route the MIDI to my DAW and use virtual instruments for playback.

In MuseScore 4, I see the MIDI Output settings, and I've selected the IAC Bus, but it doesn't seem to send anything. Is real-time MIDI output no longer supported in MuseScore 4? Or is there a specific workaround or setup I need to enable it?

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