Midi sidechain to VST FX

Is it possible to sidechain midi to vst effects? As an example, sending the midi of a track to a vst like Duck

do you want to trigger MIDI from a sequencer track or from an external MIDI source?

From a sequencer track. Also interested in doing it with a midi keyboard

MIDI as midi notes or midi as midi ccs aka controller values?
Perhaps you can simply use Modulation/Routing and Key Tracker to get what you want?

If you want monophonic midi notes converted to cc messages then Key Tracker is the way - you can select other track in the Destination drop down menu box. Use it with Instrument Automation meta device efx.

Ah yes perfect, the key tracker is what I was looking for. Many thanks!

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Actually I just tried it and I haven’t managed to do it… I am wondering if the key tracker does what I want: I want the vst FX to reveice the midi notes and velocity directly, not converting the midi notes into a modulation signal to modulate a vst parameter.

Can you please tell the name of the VST FX to see how it receives external MIDI.
What you also can try:

Some VSTs like Cableguys Shaper Box use MIDI triggering by setting it as alias in the instrument panel.
To set a VST FX as alias do the following steps:

1.) put your VST FX on a sequencer track, as usual from the Effects chooser.

2.) go and have a look into the instruments panel. If your VST FX has MIDI input for triggering it now should be showed as alias in the VST instruments dropdown list.

4.) load the FX alias into an empty instrument slot.

5.) open the alias instance of your VST FX and check if you also have to configurate the trigger input of your VST FX internally (in some VST effects you also need to set the kind of signal for triggering).

Now you should be able to set MIDI notes in a sequencer track like playing a VST instrument or trigger it by playing notes on your MIDI keyboard.

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The FX alias is the correct way, thanks.

It was actually for a vst I am developing - but I was using devious machines duck as an example, and the workflow is the same as with cable filter guys or any other vst.

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