\catcode`*=13 % asterisk for a breath
\newcommand{*}{\hspace{1mm}$\star$\hspace{1mm}}

\iftoggle{darker}
{\newcommand{\barline}{\rule{0.6mm}{5.5mm}}\newcommand{\barpad}{\hspace{0.9mm}}}
{\newcommand{\barline}{\rule{0.4mm}{5.5mm}}\newcommand{\barpad}{\hspace{1mm}}}

\catcode`|=13 % vertical bar for a barline
\newcommand{|}{\barpad\raisebox{-1.3mm}{\barline}\barpad}

\catcode`¬=13 % negate for a double barline
\newcommand{¬}{\barpad\raisebox{-1.3mm}{\barline}\barpad\raisebox{-1.3mm}{\barline}\barpad}

\catcode`_=13 % underscore for a centred dot
\iftoggle{darker}
{\newcommand{_}{\hspace{0.3mm}\raisebox{1.3mm}{\rule{0.80mm}{0.80mm}}\hspace{0.3mm}}}
{\newcommand{_}{$\cdot$}}

\catcode`†=13 % dagger for a posher dagger
\newcommand{†}{$\dag$}

\catcode`¶=13 % paragraph mark for a paragraph mark (needs math for filled P)
\newcommand{¶}{{\normalfont$\mathparagraph$}}

\catcode`♭=13 % flat for a posher flat
\newcommand{♭}{$\flat$}

\catcode`♮=13 % natural for a posher natural
\newcommand{♮}{$\natural$}

\catcode`♯=13 % sharp for a posher sharp
\newcommand{♯}{$\sharp$}