\providecommand{\defaulttemplate}{
  \title{Recueil de chansons pour guitare}
  \author{Romain Goffe \and Alexandre Dupas}
  \subtitle{}
  \version{3.1}
  \mail{crep@team-on-fire.com}
  \picture{feel-the-music}
  \picturecopyright{©foxygamergirl @ deviantart.com}
  \footer{
    \begin{flushleft}
      \includegraphics[width=3cm]{on-fire}
    \end{flushleft}
  }
  \licence{\input{license.tex}}
}
\providecommand{\template}{\defaulttemplate}
\providecommand{\songslist}{}
\providecommand{\booktype}{chorded}

\documentclass[\booktype]{crepbook}
\usepackage[utf8]{inputenc}
\usepackage[english,french]{babel}

\newindex{titleidx}{templatetitle}
\newauthorindex{authidx}{templateauth}

\graphicspath{
  {img/},
}

\template
\begin{document}

\maketitle

\showindex{Index des chansons}{titleidx}
\showindex{Index des auteurs}{authidx}

\songsection{Chansons}
\begin{songs}{titleidx,authidx}
  \songslist
\end{songs}

\end{document}