[Vibraphon]

@itsme: Fortunately, I was able to solve the problem because I had previously tried to create my own font. I had downloaded the FontLab software for this purpose. You can use it legally for 10 days as a trial.

Because MuseJazzText wouldn't work for me either, but my self-made (but worse) font would, I had a look at the MuseJazzText font in FontLab.

I noticed that the full name of the MuseJazzText font contains a space: “MuseJazz Text”. However, abc cannot handle this space, as it then expects other information, such as sizes or box.
   
I then simply saved the font as a copy in FontLab, but now without the space at Full name and Family name.
   
I don't dare to post the modified font here because I'm not familiar with copyright regulations.

HTH