Backport commit 4d64c39fa from Emacs

; * lisp/org/ob-lilypond.el: Add FIXME.
4d64c39fad481f2dc125aa4d207ab191bf697529
Stefan Kangas
Thu Aug 4 14:48:44 2022 +0200

lisp/ob-lilypond.el

@@ -36,6 +36,7 @@
 
 (declare-function org-show-all "org" (&optional types))
 
+;; FIXME: Doesn't this rather belong in lilypond-mode.el?
 (defalias 'lilypond-mode 'LilyPond-mode)
 
 (add-to-list 'org-babel-tangle-lang-exts '("LilyPond" . "ly"))