These drawings are notations for silent singing.
Any music notation is a space of time, a reckoning of past, present, and future, with the performance as its sum. The score is a tally-sheet, with the performance as its sum. It is a calculus of the body.
By rendering breathlessness in fields of pitched consonants, is it possible these drawings give us a positive notation for silence -- for incipient noise as music?
In the end, in their performance as music, they may not actually be scores for a vocalist, but for a dancer, or an actor, as the body in space are the terms of those performance arts, even possibly the closed, private spaces of the mouth and throat.