Henrik Frisk <frisk.h@gmail.com> writes:

> So I grabbed the file ob-lilypond from another inactive install of Emacs
> 29.1 and linked to it in my init file. Everythin appears to work fine
> except I dont get syntax highlightning unless I hit C-c '

I recommend installing Org mode from ELPA to make sure that you are
using the latest version.

Also, there were possibly relevant changes on development branch. So you
might need ELPA devel version.