Ableton/Live/UG/17 Routing and IO/03 External MIDI In-Out/03 Connecting External Synthesizers
- To play an external synth, set the track's Output Type to the synth's MIDI port and Output Channel to its channel.
- The External Instrument device does the same from inside the device chain, and also brings the synth's audio back into the same track. See Ableton/How To/Record MIDI and Audio from external device.
- When one keyboard synth is both your controller and a sound source, turn on its Local Off so Live becomes the hub that passes keyboard and clip MIDI to it.