hmmm. I'd doubt that one to be honest.
I'll give my reasons here...
to add a low whistle or tin whistle as a modelled instrument to organteq, it doesn't fit as an organ property for a start.
The low whistle in particular has a very particular sound, but it's not just that, it's the breath from the chiff and fipple creating the unique harmonics and charm, not only that but you also need to be aware of ghost notes, transient tones and note bending, under and over blowing, which mean that velocity is required.
I say this as a low whistle player and uilleann piper, so this is my background. Sampled low whistles never work out, nor do uilleann pipes because the samples don't cover techniques properly like cranning, double cranning, rolling cut notes, bends, etc and in the end they just sound horrid.
tin whistle though which is from a soprano / mezzo soprano could be more achieveable because that would be based on a 2' open flute stop spec but voiced further, the trick is getting the character of the bore, chiff and fipple modelled right.
I don't see how a low whistle couldn't be modelled, would be a great side project to test, but you would struggle with it against a pipe organ in terms of midi velocity behaviour and controllers to interact with note bends, etc unless you create key switches which offer the characteristics found in whistle playing, which would be more doable.
lew
Blind Music Producer, Composer, pianist and Church Organist. Accessibility development specialist for MacOS. Developing a solution for blind organists to have an accessible digital organ solution.