\version "2.12.3"
rochade = \once \override Score.BreakAlignment #'break-align-orders = 
  #(make-vector  3 
    '(left-edge 
      ambitus 
      breathing-sign 
      clef 
      time-signature 
      staff-bar 
      key-cancellation 
      key-signature 
      custos))
padTsBar = \once \override Score.TimeSignature #'space-alist = #'( 
      (first-note fixed-space . 2.0) 
      (right-edge extra-space . 0.5) 
      (staff-bar minimum-space . 3.0))

\relative c' {
  \clef tenor 
\override Staff.TimeSignature #'stencil = #'() \cadenzaOn \once \override Staff.OttavaBracket #'direction = #DOWN \set Staff.ottavation = 
#"8vb ad lib." \once \override Script #'script-priority = #-100 bes'4\fermata^\markup {\fontsize #1.5 "frei" \fontsize #0 "  (Klav. tacet)"} 
a-- g-- \ottava #0 \clef bass \times 2/3 {es4 (d c)} \times 2/3 
{d c bes} c8 [(bes!) as ges] \times 2/3 {bes! ([\once \override Accidental #'transparent = ##f a) \once \override Accidental 
  #'transparent = ##f g](} \times 2/3 {a) [\once \override Accidental #'transparent = ##t g es]} as16 [(ges es!) d] \once \override 
Accidental #'transparent = ##f g [es! d (c)] bes4\fermata as-- ges-- \set Staff.ottavation = #"8va ad lib." bes,\breve d e 
\cadenzaOff \bar "|:" \break \rochade \padTsBar \time 4/4 \revert Staff.TimeSignature #'stencil \override Score.RehearsalMark  #'break-visibility = 
#begin-of-line-invisible \mark \markup \musicglyph #"scripts.ufermata" 

\time 4/4 \bar "|:"\set Score.currentBarNumber = #8 

\grace s8 \once \override Score.RehearsalMark #'extra-offset = #'(-3 . -2.5) \mark \markup \box \pad-markup #0.25 "B" \autoBeamOn 
\tempo \markup \fontsize #1.5 "erstes Zeitmaß" \ottava #0 
r2 \once \override Accidental #'transparent = ##t e'4\mp \once \override Accidental #'transparent = ##t b'8 [b] d r r4 f,16 [(a) g gis] 
d'8 r r2 g,4 d'8 [d] f [f] r4 a,16\< [(c) ais b] f'8\! r f,4--\mf a-- g-- gis-- 
}
\layout {
  indent = 0
}