% !TEX TS-program = lualatex - % !TEX encoding = UTF-8
% This is a  template for a LuaLaTeX document using gregorio scores.
\documentclass[a4paper,12pt]{article}% default would be 10pt
% usual packages loading:
\usepackage{fontspec}
\usepackage{graphicx} % support the \includegraphics command and options
\usepackage{gregoriotex} % for gregorio score inclusion
\usepackage{fullpage} % to reduce the margins
\usepackage[dutch]{babel}
\pagestyle{empty}
\usepackage{color}
% here we begin the document
\begin{document}
\newcommand{\red}[1]{\textcolor{red}{#1}}
\newcommand{\black}[1]{\textcolor{black}{#1}}
\newcommand{\cent}[1]{\begin{center}{#1}\end{center}}
\newcommand{\links}[1]{\begin{flushleft}{#1}\end{flushleft}}
\input AnnSton.fd
\input Acorn.fd
\newcommand*\initfamily{\usefont{U}{Acorn}{xl}{n}}
\newcommand*\yourfont{\usefont{U}{AnnSton}{xl}{n}}
% The title:
% Here we set the space around the initial.
\grechangedim{beforeinitialshift}{3.2mm}{scalable}
\grechangedim{afterinitialshift}{3.2mm}{scalable}
% Here we set the initial font. Change 43 if you want a bigger initial.
\grechangestyle{initial}{\initfamily\fontsize{36}{36}\selectfont\color{red}\relax}
\grechangedim{spaceabovelines}{0.3cm}{scalable}
\gresetbarspacing{new} %%ipv gresetbarspacing{old}
\grechangedim{maxbaroffsettextleft}{0 cm}{scalable}%
\gresetnabcfont{grelaon}{14}
\gresetgregoriofont[op]{greciliae}
\grechangestaffsize{19}
\cent{\begin{yourfont}\Large\red{A}\end{yourfont}\Large\black{lleluia Omnes gentes}}
% We set I above the initial.
%\gresetlastline{justified}%if usefull
\greannotation{\small{\textbf{Al - I}}}
\links{\black\small GT 298, Tempus per annum}
% We type a text in the top right corner of the score:
\grecommentary[8mm]{\emph{Ps.46,2}}
\skip
% and finally we include the score*; indicate map/* if necessary
\gregorioscore[a]{gabc/al_omnes_gentes}
\cent{\greseparator{2}{20}}
\end{document}