\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{lilypondbook}

\RequirePackage{verbatim}
\newenvironment{lilypond}{%

\medskip
\hrule
\medskip
\noindent
\textit{LilyPond example, to be processed with lilypond-book:}
	\verbatim
}
{
	\endverbatim
	
	\hrule
	\medskip
}