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This is an altervative approach, but the width has not been set properly... Any suggestion how to configure this?

\documentclass[12pt]{article}
\usepackage[T1]{fontenc}
\usepackage{polyglossia}
\setmainlanguage{spanish}
\usepackage{etoolbox}
\usepackage{float} %Paquete para posicionar Tablas ...

We need to anotate an score using arrows and texts, the code is as follow:

\documentclass[12pt]{article}
\usepackage[T1]{fontenc}
\usepackage{polyglossia}
\setmainlanguage{spanish}
\usepackage{etoolbox}
\usepackage{float} %Paquete para posicionar Tablas
\usepackage{tikz}
\usetikzlibrary{arrows ...