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

> Sorry for being late in this discussion. As a user of ob-lilypond I'm very
> happy about these changes. On my last install, as well as my current I have
> had to change the following:
>
> (org-babel-get-header params :var) which appears to be outdated, to:
>
> (org-babel--get-vars params)

There is no such function `org-babel-get-header'.

> in the version of ob-lilypond.el from here:
> https://github.com/mjago/ob-lilypond/blob/master/lisp/ob-lilypond.el. Which
> version of the file are you patching now?

ob-lilypond is distributed together with Org mode
(https://git.savannah.gnu.org/cgit/emacs/org-mode.git/tree/lisp/ob-lilypond.el).
And you are looking at 12 years old early version of the library.