Set Probability of Note Playing

[Schabbes]

I think there is no easy way of doing this in Rack… You might be able to set something up using Bernoulli gates to trigger different notes… don’t have a better idea right now… but:

There is this module by Aria Salvatrice, which might be right for you

Aria Salvatrice Signature Series Darius

What would work very well for this is a free VST called Stochas

Stochas

If you want to use it with Rack you have to run it in a different DAW and send MIDI to Rack with a virtual MIDI cable, or find a solution here:

How to send MIDI out from VCV Host using Module 'MIDI Over Audio'

Similarly, BiduleVST could work great for this. Load Bidule in Host, any VST/i’s you want in it, and then route the MIDI out/back into Rack with some MIDI>CV module. The built-in parameter mapping and filtering/clamping nodes in Bidule are super handy, too.