% A comment on the first line should not confuse lilypond-book's format
% detection
\documentclass[a4paper, 12pt]{article}

\usepackage{graphics}
\begin{document}

\section{A comment on the first line of the file}

The source file for this document contains a comment on the first line.
This should not confuse the auto-detection of lilypond-book...

{%
\parindent 0pt
\noindent
\ifx\preLilyPondExample \undefined
\else
  \expandafter\preLilyPondExample
\fi
\def\lilypondbook{}%
\input{96/lily-ee65f9b7-systems.tex}
\ifx\postLilyPondExample \undefined
\else
  \expandafter\postLilyPondExample
\fi
}

\end{document}