tex macros and lilypond-book

[Atte André Jensen]

I'd like to define a macro for snippets of music
examples in LaTeX so instead of writing:

\begin{figure}[h]
  \caption{\emph{\small{Caption}}}
  \label{label}
  \begin{center}
    \begin[notime,smallverbatim,singleline]{lilypond}
    \clef bass
    c d e f g a b
  \end{lilypond}
  \end{center}
\end{figure}

I could write

\my_lily_example_macro{
  \clef bass
    c d e f g a b
}

I guess I don't have to mention that lilypond-book naturally
fails to work when using macros like this, since it simply processes
everything between \begin{lilypond} and \end{lilypond} leaving
everything else untouched. And the \begin{lilypond} and \end{lilypond}
are only to be found in the macrodefinition, so nothing happens...

Is it possible to expand user-defined macros before running
lilypond-book or how can I solve the problem?

-- 
peace, love & harmony
Atte