\documentclass[12pt, letterpaper]{article}
\usepackage{fullpage}
\usepackage{palatino}
\usepackage{tgothic}
\usepackage{tgtermes}
\usepackage{color}
\usepackage[T1]{fontenc}
\usepackage[utf8]{luainputenc}
\usepackage{gregoriotex}
\usepackage{gregoriosyms}
\usepackage{fancyhdr}
%\usepackage{parskip}
%\usepackage{changemargin}
\pagestyle{empty}
\begin{document}
\newcommand{\red}[1]{\textcolor{red}{#1}}
\newcommand{\black}[1]{\textcolor{black}{#1}}
\newcommand{\cent}[1]{\begin{center}{#1}\end{center}}

\input Acorn.fd
\newcommand*\initfamily{\usefont{U}{Acorn}{xl}{n}}

\def\greinitialformat#1{%
{\initfamily\fontsize{33}{33}\selectfont\textcolor{red} #1}%
}

\setspacebeforeinitial{3.2mm plus 0em minus 0em}
\setspaceafterinitial{3.2mm plus 0em minus 0em}

\fancyhead[L]{\textbf{\emph{XXXX-OCCASION-XXXX}}}
%\emph{}\\


\setgrefactor{17}
\grespaceabovelines=0mm

\begin{center}\begin{huge}\textsc{Dominica Secunda Adventus.}\end{huge}\end{center}

\includescore{TA02-full.tex}

\end{document}