Re: What is the meaning of a mordent on top of a sharp sign?

[Hans Åberg]

> On 28 Jun 2022, at 06:23, Kenneth Wolcott <kennethwolcott@gmail.com> wrote:
> 
>  What remains (that I did not specify) is how to engrave this?

I have:

above = { \once \override Script #'script-priority = #-100 }
below = { \once \override TextScript #'script-priority = #-100 }

And then, for a trill with a natural above (also used for a prall), and a 
mordent with sharp below:
  \above fis8\trill^\markup{\natural}
  \below b8\mordent^\markup{\sharp}

These accidentals may change when transposing, and LilyPond does not seem to 
have a way to adjust that automatically.