\mark \markup { \bold { Senza denti } }
% the hidden measure and bar line
+ % \cadenzaOn turns off automatic calculation of bar numbers
+ \cadenzaOn
\once \override Score.TimeSignature #'stencil = ##f
\time 1/16
s16 \bar ""
+ \cadenzaOff
\time 4/4
\once \override Score.RehearsalMark #'self-alignment-X = #LEFT