\documentclass[12 pt,letter]{article}
\begin{document}
\newcommand{\composer}[1]{\begin{flushright}{\textsl{#1}}\end{flushright}}
\newcommand{\lilytitle}[2]{\begin{center}{\LARGE{\textbf{#1}}\\\Large{#2}}\end{center}}
\newcommand{\lilycontentsline}[1]{\addcontentsline{toc}{section}{#1}}
\lilycontentsline{Arise, get up, my deere,}
\lilytitle{Arise, get up, my deere,}{ Cantus}
\composer{ Thomas Morley}
\lilypondfile{cantus.ly}
\clearpage
\lilytitle{Arise, get up, my deere,}{ Altus}
\composer{ Thomas Morley}
\lilypondfile{altus.ly}
\clearpage
\lilytitle{Arise, get up, my deere,}{ Bassus}
\composer{ Thomas Morley}
\lilypondfile[11pt]{bassus.ly}
\footnotetext{ The original has a cut time in the bassus, but C in altus and cantus, so I}
\footnotetext{ have treated this as an error.}
\footnotetext{(1) Original is f quarter note}
\footnotetext{(2) Original is an eighth note}
\footnotetext{(3) Original is a half note.}
\clearpage
\end{document}