Even in horns, it's standard practice to emulate the physiology (with the throat, shape of the mouth, etc) of 'singing'/vocalization. Might be of interest - pertaining to the above ..
*listening to Alice Parker (on 'on being'/Krista tippet), someone said, "There's an aspect of sound not realized until it is embodied in the human throat" (prphr).
Ms Parker iterated that - it - is all about "the sound" ( of singing/vocalization - from a nonrational perspective, etc).
Bookmarks