He is changing the auxiliary ad lib, just as your notation implies; the notation is a transcript. Here is another example, though it may be hard to hear: https://www.youtube.com/watch?v=AxgLm96eYx8
But anyway, you want to reproduce the notation in the link you gave. > On 10 Jul 2023, at 15:49, Gregory Evans <[email protected]> wrote: > > Hi Hans, > your video shows a very cool technique! That's not quite what I'm after. > There is a somewhat established notational convention which follows the image > I supplied in my last email. See Carin Levine's "Die Spieltechnik der Flöte" > on pages 43-44 of the bilingual edition. Not every composer uses the notation > *precisely* the same. Sometimes, as you describe, the auxiliary note is what > is changing, but in some instances the composer means for the performer to > randomly combine alternations of any of the pitches in a trill-like manner. > There is an example on the first page if this score: > https://www.youtube.com/watch?v=KQVeOp12_E4 > > regards, > GR
