\version "2.10.15"

global = { \key f \major \time 4/4 \partial 4 s4 s1*5 }

rechts = \context Staff \relative c'{
  \context Voice = "rechts"
  \override Fingering #'avoid-slur = #'inside
  \override Script #'avoid-slur = #'inside
% =============== % AUFTAKT:
<<
  { c''4 \trill ( }
    { s8. \grace {
      \once\override Fingering #'font-size = #-6
      b16 -2 [
      \once\override Fingering #'font-size = #-6
      c -1 ]
    }
  }
>>
% =============== % TAKT  1:
a'16 -4 -> g f c
a -4 -> g f c
a -4 -> g f c
\change Staff = down \stemUp
a -4 ^> g f c)
% =============== % TAKT  2:
f -> -2 ( g a c -1
\change Staff = up \stemDown
f -> -2 g a c -1
f -> g a c -1
f -> -2 g a g
% =============== % TAKT  3:
f -> c a -4 g
f -> c a -4 g
\stemDown
f -> c
\change Staff = down \stemUp
a -4 g
\stemNeutral
f -> c f a)
}

\score {
  \context PianoStaff <<
    \context Staff = "up" << \global \clef violin \rechts >>
    \context Staff = "down" << \global \clef bass >>
  >>
  \layout { }
}