Controller/Program changes in Cue launch

[martibs]

I’m trying to get a hang of the Cue MIDI clips, and I’m sending a simple 4x4 one note sequence in Trigger launch style to an external synth. When I inspect the output via the (excellent) MIDI Tracer, I see that a Controller and Program Change message is sent every time the clip starts over.

Why is this? It is not part of the actual MIDI clip that I loaded. (On Ardour 8.10)

    63574016      Controller chn 10 00 00
    63574016      Controller chn 10 20 78
    63574016  Program Change chn 10 00
    63575552          NoteOn chn 10 3c 40
    63587074         NoteOff chn 10 3c 40
    63597157          NoteOn chn 10 3c 40
    63608770         NoteOff chn 10 3c 40
    63618762          NoteOn chn 10 3c 33
    63630724         NoteOff chn 10 3c 40
    63640368          NoteOn chn 10 3c 40
    63651485         NoteOff chn 10 3c 40
    63661973      Controller chn 10 00 00
    63661973      Controller chn 10 20 78
    63661973  Program Change chn 10 00
    63661973          NoteOn chn 10 3c 40
    63673496         NoteOff chn 10 3c 40
    63683584          NoteOn chn 10 3c 40
    63695191         NoteOff chn 10 3c 40
    63705184          NoteOn chn 10 3c 33
    63717146         NoteOff chn 10 3c 40
    63726789          NoteOn chn 10 3c 40
    63737907         NoteOff chn 10 3c 40

[BenLoftis (Ben)]

The controller-change is necessary/desirable because you can have different clips playing into the same instrument, and they can make different sounds. For example you can use an ‘electronic’ kit for some of your drum sequences and a ‘natural’ kit for other loops.

In your screenshot there’s a button labeled “Send Patches” which appears to be on. If you disable that, do the patch changes go away ?

[martibs]

Aha, yes, they do. Thank you.