We ned more info.

What, exactly, is it that you “can't find a way to notate” ?

- the clef changes?

- the expressions?

- the fingerings?

- the cross-staff notation?

- the “headless” stems?

- or?

I'm sure Peter will come up with a better way, (and I mean that as a sincere compliment,) but here's a start...

That was exactly what I was struggling with! Thank you very much for helping me out.

Did you use a combination of hidden noteheads and a glissando line, or is the wavy line som kind of custom notehead?

/Petter

Shrunken noteheads. I used JW Change to reduce the size to 1%. The squiggle and arrowhead expression is a single character from the Bravura font, character #58933. The numbers are a separate expression; just TNR.

Another way to hide noteheads (= to get headless stems):

Change the notehead font to Hidden style.

Also, there are squiggle arrows of various lengths in EngraverText, in the slots #72–#77.

See? I told you Peter would have a better way!

One thing more:

After you have hidden the noteheads, you may need to hide some ledger lines.

There is a plug-in for that:

Plug-ins manu > Note, Beam, and Rest Editing > Ledger Lines (Hide)