\documentclass[a5paper,landscape,11pt]{article}
\usepackage{graphicx}
\usepackage{helvet}
\usepackage{newcent}
\usepackage{fancyhdr}
\usepackage{longtable}

% ----- Common variables

\def \build {\input{buildno.txt}}

% ----- Page setup

\setlength{\parindent}{0pt}

% Adjust margins for A5 landscape. Increase width by 2cm and height by 4cm.
\addtolength{\textwidth}{2cm}
\addtolength{\hoffset}{-1cm}

\addtolength{\textheight}{4cm}
\addtolength{\voffset}{-2cm}

% -----

\begin{document}

% ----- Headers and footers

\pagestyle{fancyplain}
\fancyhf{}
\lfoot{Issue \build}
\rfoot{\thepage}
\renewcommand{\headrulewidth}{0pt}

% ----- Title page and contents

\title{Ye Crie Havock Booke of Dottes \\ \input{subtitle.txt}}

\author{Cry Havoc}

\date{\today}

\maketitle

\newpage

\tableofcontents

\newpage

% -----

\section{Introduction}

\input{intro.txt}

% -----

\section{Tunes}

Tunes are arranged in alphabetical order of tune title.

\newpage