\documentclass[12pt]{article}
\usepackage{graphicx}
\usepackage[textwidth=10.5cm, vmargin=2cm]{geometry}
\geometry{a4paper}
\usepackage{gregoriotex}
\usepackage{fontspec}
\usepackage{xcolor}
\usepackage{fancyhdr}
\usepackage{microtype}
\usepackage{polyglossia}
\setdefaultlanguage{latin}
\setotherlanguage{italian}
\usepackage{scrextend}
\changefontsizes{12,5pt}
\setmainfont[Numbers={Proportional,OldStyle}, Ligatures={TeX}]{Arno Pro}



\begin{document}

%%%%%%%
\GreLoadSpaceConf{myspaces}
\input{salterio-conf.tex}
%%%%%%%

\pagestyle{empty}

\setgrefactor{16}

\raggedbottom

\includeant{}{rex-pacificus.tex}{\myAbar\ viii}{g}{Cf. 1 Reg 10, 23-24}
\includeant{}{diffusa-est.tex}{\myAbar\ i}{g3}{Ps 44, 3}


\end{document}
