Ave Maria Bach Gounod/score

sop = \relative c'' {
  \clef treble
  \key c \major
  \set Voice.beatStructure = #'(2 2)
  \oneVoice
  \repeat volta 2 { r4 g8 c e g, c e }
  \repeat volta 2 { r4 a,8 d f a, d f }
  \repeat volta 2 { r4 g,8 d' f d g, d' }
  \repeat volta 2 { r4 g,8 c e c g c }
  \set Voice.beatStructure = #'(2 2)
  e1
  f2. r8 f
  g2. ( d4 ) e2. r4
  a2 ~( a8 a,) h( c)
  d4. ( e8 ) d4 r
  g2 ~( g8 g,) a h
  c4. ( d8 ) c4 r
  c'2 ~( c8 c,) d( e)
  fis4. ( e8 d4 ) a
  h2 r4 d
  e2 r8 e( f g)
  a4. a,8 a4 r d2 r8 d ( e ) f
  g4. ( g,8 ) g4 r
  c2 r8 c ( d e )
  f2 r8 f( g a )
  h4. a8 g4 ( d ) e2. r4
  g2 e4 r8 r16 e
  a2 a,4 r
  a'2 ( c,4. ) a'8 c2 es,4 r8 c'
  c2 d,4 r d2 r8 d( c ) h
  g'4. ( e8 ) c4 r
  f2 r8 f e d d'4. h8 g4 r
  a2 r8 a( h) c
  e2 ~( e8 c) g e
  d2 ~( d8 a') h( a )
  g( d') h( g) f(d) h ( g)
  c2. r4
  r4 g,8 b c e c b
  e c b g b g b g
  r4
  \stemUp
  \change Staff = "Bass"
  f8 a
  \change Staff = "Discant"
  c f c a |
  \change Staff = "Bass"
  \shiftOff
  c a f a f d f d
  \change Staff = "Discant"
  \stemNeutral
  r4 g'8 h d f d h d h g h d, f e d
  <e g c>1\fermata
  \bar "|."
}

ten= \relative c {
  \clef bass
  \key c \major
  r8 e'4. ~ e2
  r8 d4. ~ d2
  r8 d4. ~ d2
  r8 e4. ~ e2
  \voiceOne
  \set Voice.beatStructure = #'(2 2)
  c,8 e g c g c g e
  c d f a f a f d
  h d g h g h g d
  c e g c g c g e
  c e a c a c a e
  c d fis a fis a fis d
  h d g h g h g d
  h c e g e g e c
  a c e a e a e c
  d fis a d a d a fis
  g, h d g d g d h
  g b cis e cis e cis b
  f a d f d f d a
  f as h d h d h as
  e g c e c e c g
  e f a c a c a f
  d f a c a c a f
  g h d g d g d h
  c e g c g c g e
  c e g b g b g e
  f a c e c e c a
  fis! a c es c es c a
  g, c es g es g es c
  as h d f d f d h
  g h d f d f d h
  g c e g e g e c
  g c d f d f d c
  g h d f d f d h
  c es fis a fis a fis es
  g, c e g e g e c
  g c d f d f d c
  g h d f d f d h
  c e g b g b g e
  \repeat volta 2 { r8 c4. ~ c2 }
  r8 c4._~ c2_~ c1
  r8 d4. ~ d2 ~ d1
  c1
}

bas = \relative c  {
  \voiceTwo
  c'1
  c
  h
  c
  c,2 ~c c ~c
  h ~h c ~c c ~c
  c ~c h~ h h~ h
  a ~a d~ d g, ~g
  g~ g f ~f f ~f
  e ~e e ~e d ~d
  g ~g c~ c c~ c
  f~ f fis ~fis g,~ g
  as~ as g~ g g ~g
  g~ g g~ g c~ c
  g ~g g ~g g ~g c~ c
  c,1 c c c c c\fermata
}

Struktur = {
  \time 4/4
  \override Score.NonMusicalPaperColumn.page-break-permission = ##f
  \override Score.SpacingSpanner.common-shortest-duration = #(ly:make-moment 1/1)
  s1 * 20 \pageBreak
}

mypaper = \paper {
  top-margin = 20\mm
  ragged-bottom = ##f
  ragged-last-bottom = ##f
  bottom-margin = 20\mm
  indent = #0
  line-width = 170\mm
  print-all-headers = ##f
  #(include-special-characters)
  oddFooterMarkup = ##f
  evenFooterMarkup = ##f
  annotate-spacing = ##f
  scoreTitleMarkup = ##f
  markup-system-spacing.padding = #2
  bookTitleMarkup =
  \markup {
    \override #'(baseline-skip . 2)
    \column {
      \fill-line {
        \huge \larger \larger \bold
        \center-column {
          \fromproperty #'header:title
        }
      }
      \vspace #.3
      \fill-line \bold { \fromproperty #'header:subtitle }

      \fontsize #-1.5 {
        \fill-line {
          "Notensatz: lilypond.miraheze.org" ""
          \fromproperty #'header:composer
        }
      }
    }
  }
}

kopf = \header {
  title = "Ave Maria"
  subtitle = "nach J.S. Bach"
  composer = "M: Charles Gounod (1818-1893)"
  piece = ##f
  poet = "Notensatz: lilypond.miraheze.org"
}

\bookpart {
  \mypaper
  \kopf
  \score
  {
    \orgelsimple \RH {} \ten \bas \Struktur c
  }
}