This one is as much an experiment in sound design than anything else, tweaking a synth with a formant filter to create something… well, not really akin to it at all, but slightly evocative of overtone singing (which makes sense, considering that overtone singing is about formant manipulation above all else). It’s certainly an interesting thing to hear coming from what’s basically a subtractive synth, though. Not quite like someone singing, but eerily expressive nonetheless…