Still no success in tangling the examples modal-cycle.org modal-cycle2.org shown here, https://orgmode.org/worg/org-contrib/babel/languages/ob-doc-lilypond.html
My current problem is Emacs rejecting the addition of either Lilypond or lilypond, in the org-babel-do-load-languages (org-babel-do-load-languages 'org-babel-load-languages '( (emacs-lisp . t) (shell . t) (org . t) (Lilypond . t) )) including either in the last line causes an error at Emacs startup, reported as, Warning (initialization): An error occurred while loading ‘/home/user/.emacs’: Symbol's value as variable is void: <!DOCTYPE Earlier in my .emacs init file, I had hopefully defined lilypond, thus (setq ly-nix-ly-path "lilypond") (add-to-list 'load-path "/usr/share/emacs/site-lisp/") (autoload 'LilyPond-mode "lilypond-mode") (setq auto-mode-alist (cons '("\\.ly$" . LilyPond-mode) auto-mode-alist)) (add-hook 'LilyPond-mode-hook (lambda () (turn-on-font-lock))) In /usr/share/emacs/site-lisp/ many lilypond related .el files are located, lilypond-font-lock.el lilypond-indent.el lilypond-init.el lilypond-mode.el lilypond-song.el lilypond-what-beat.el lilypond-words.el ltx-help.el ob-lilypond.el ob-Lilypond.el ob-lisp.el org-tests.el $ which lilypond is unhelpful, /usr/bin/lilypond The lilypond installation is at, /usr/share/lilypond/2.18.2/ Any advice or suggestions would be most welcome.