OK, very basic sample - just to get the idea NoteOnFiltering.gig (43.7 KB)
The Widgets are mapped to the MIDI Filters NoteOn. So depending on the Widgets state the Plugins get NotOn messages or not.
In this sample I have reversed the values to indicate ‘Instrument On’ with the widget
HTH
BBB
PS: There are some other instruments available which may also produce sound on Note Off (e.g. a Hammond plugin with key-klick. Here you my want to get a different path…