\documentclass[a4paper, 12pt]{article}

\begin{document}

\section{Using lilypond-book's fragment option}

If a snippet is not a fully valid LilyPond file, you have
to use the \verb|fragment| option:

\begin{lilypond}[fragment]
c d e
\end{lilypond}

% TODO: \verb does not yet work!!!
There is also a shorthand version %\verb|\lilypond[fragment]{c' e' g'}|:

\lilypond[fragment]{c' e' g'}

\end{document}