@code{\parenthesize} command detailed in @ref{Parentheses}. However,
the default @code{\drummode} does
not include the @code{Parenthesis_engraver} plugin which allows
-this. You
-must add the plugin explicitly in the context definition as
-detailed in @ref{Changing context properties on the fly}.
+this.
@lilypond[quote,ragged-right,verbatim,fragment]
\new DrumStaff \with {