I hope it's not too late to answer my solution. Like John I had the same problem. But also I had mixed the musixtex and songs packages. It seems that doesn't work compiling with pdflatex, but does with latex.This is my music.tex example code:
\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage[latin1]{inputenc}
\usepackage[spanish]{babel}
\usepackage{geometry}
\usepackage[chorded]{songs}
\usepackage{musixtex}
\usepackage{graphicx}
\usepackage{etex}
% for "songs" package
\noversenumbers
% \songcolumns{2}
\begin{document}
\renewcommand{\lyricfont}{\small}
\renewcommand{\printchord}{\it\small}
\afterpreludeskip=-18pt
\beforepostludeskip=-8pt
\songsection{Canciones para Guitarra}
\begin{songs}{}
\beginsong{Sin tu latido}[by={\small Fernando delgadillo},
cr={Powered by LaTeX and Songs & MusiXTeX packages, transcribed in 2020}]
% From "musixtex" package
% Some guitar tablature notation:
\begin{music}
\smallmusicsize
\instrumentnumber{1}
\setclefsymbol1{\small\tabclef} % and a TAB clef
\setstaffs1{1}
\nobarnumbers
\setname1{\tabstringfnt\baselineskip=1.5\internote%
\vbox{
\hbox to\parindent{\hss e\hss}%
\hbox to\parindent{\hss B\hss}%
\hbox to\parindent{\hss G\hss}%
\hbox to\parindent{\hss D\hss}%
\hbox to\parindent{\hss A\hss}%
\hbox to\parindent{\hss E\hss}}}
% \let\extractline\leftline % left aligned
% \generalmeter{\meterC} % Puts the metric type in the tablature diagram
\startextract
\notes \tab{4}{3} \tab{3}{0} \tab{3}{2}\en
\bar
\notes \tab{2}{0} \tab{3}{2} \tab{2}{0}\en
\bar
\notes \tab{2}{1} \qp \qp\en
\endextract
\end{music}
% From "songs" package
% Some chords diagrams:
\gtab{A}{1:X02220} \gtab{E}{1:022100} \gtab{D}{1:XX2320}
\gtab{Bm}{1:X(24432)} \gtab{C#m}{4:X(13321)} \gtab{E7}
{1:020100} \gtab{Bm7}{1:X(24232)} \gtab{F}{1:(133211)}
% Some lyrics:
\beginverse\newchords{verso}\memorize[verso]
\[A]Hay algunos que d\[E]icen
bla bla bla...
\endverse
\beginverse\newchords{estribillo}\memorize[estribillo]
Ay, amor \[Bm]mío, \[C#m] qué terriblemente abs\[E7]urdo es estar v\[A]ivo, bla bla bla..
\endverse
\beginverse
{\nolyrics Final chords: \[A] \[Bm7] \[A] \[D] \[F] \[A]}
\endverse
\endsong
\end{songs}
\end{document}
To correctly compile and have an pdf output, from consol I run the comands:
latex music.tex
dvips music.dvi
ps2pdf music.ps
I'm using MikTeX (v2.9.62) and TeXMaker (v5.0.3) in Windows 10, but I made a simple musixcompiler.bat batch file in order to make a little bit fast the process and delete the aux files, so I can run from consol >musixcompiler.bat music.tex (both files must be in the same folder).
musixcompiler.bat
@echo off
cls
echo MusiXTeX Compiling
latex %1.tex
dvips %1.dvi
ps2pdf %1.ps
DEL /F /Q *.mx1
DEL /F /Q *.dvi
DEL /F /Q *.ps
DEL /F /Q *.log
DEL /F /Q *.aux
echo Finished!!!!
Hope it has been helpful. This was my result:

\documentclass{...}and ending with\end{document}. – Alessandro Cuttin Jul 19 '19 at 13:05