\documentclass{article}
\usepackage[nofragment, noragged-right]{lyluatex}
\usepackage{index}
\title{Collected Tags from the Harmonizer}
\date{2018-10-20}
\newindex{tag}{tdx}{tnd}{Tag Index}
\newindex{cmp}{cdx}{cnd}{Composer Index}
\begin{document}
  \pagenumbering{gobble}
  \maketitle
  \newpage
  \pagenumbering{arabic}
  \newpage
  \index[cmp]{Richards, Jim}
  \index[tag]{Kissing the Blarney Stone}
  \lilypondfile{KissingTheBlarneyStone.ly}
  \index[cmp]{Neal, O. T.}
  \index[tag]{Dear Old Girl}
  \lilypondfile{DearOldGirl.ly}
  \printindex[tag]
  \printindex[cmp]
\end{document}
