diff --git a/README.md b/README.md
index c68b4414..2b2f56b4 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ The source code was compiled with `GNU LilyPond 2.25.12 (running Guile 2.2)` (Fe
 | Bach / me | Chorale Prelude - Jesu meine Freude BWV 610 :three: | :white_check_mark: | [pdf](https://github.com/madrisan/open-scores/releases/download/v49/JS-Bach-BWV610-Jesu-meine-Freude.pdf) |
 |  | Chorale Prelude - Nun komm’ der Heiden Heiland BWV 659 | :white_check_mark: | [pdf](https://github.com/madrisan/open-scores/releases/download/v49/JS-Bach-BWV659-Chorale-Prelude.pdf) |
 | Bach / Petri | Schafe können sicher weiden BWV 208 | :white_check_mark: | [pdf](https://github.com/madrisan/open-scores/releases/download/v49/JS-Bach-Petri-Schafe-konnen-sicher-weiden-BWV208.pdf) |
-| Bach / Stark | Siciliana BWV 1031 | :white_check_mark: | [pdf](https://github.com/madrisan/open-scores/releases/download/v49/JS-Bach-Stark-Siciliano-BWV1031.pdf) |
+| Bach / Stark | Siciliano BWV 1031 | :white_check_mark: | [pdf](https://github.com/madrisan/open-scores/releases/download/v49/JS-Bach-Stark-Siciliano-BWV1031.pdf) |
 | Bach / Stradal | Organ Sonata 4 Andante BWV 528 | :white_check_mark: | [pdf](https://github.com/madrisan/open-scores/releases/download/v49/JS-Bach-Stradal-Organ-Sonata-4-Andante-BWV528.pdf) |
 | Ludwig van Beethoven | Klaviersonate Nr.8 Opus 13 - "Grande Sonate Pathétique" | :white_check_mark: | [pdf](https://github.com/madrisan/open-scores/releases/download/v49/Ludwig-van-Beethoven-Klaviersonate-8-op.13.pdf) |
 | Alfredo Casella | Deux Contrastes op.31 | :white_check_mark: | [pdf](https://github.com/madrisan/open-scores/releases/download/v49/Alfredo-Casella-Deux-Contrastes-op.31.pdf) |
diff --git a/src/johann-sebastian-bach/ouverture-nach-franzosischer-art-BWV831/parts/bach-ouverture-nach-franzosischer-art-6-bourree-1.ly b/src/johann-sebastian-bach/ouverture-nach-franzosischer-art-BWV831/parts/bach-ouverture-nach-franzosischer-art-6-bourree-1.ly
index ca81edc0..156b1dcd 100644
--- a/src/johann-sebastian-bach/ouverture-nach-franzosischer-art-BWV831/parts/bach-ouverture-nach-franzosischer-art-6-bourree-1.ly
+++ b/src/johann-sebastian-bach/ouverture-nach-franzosischer-art-BWV831/parts/bach-ouverture-nach-franzosischer-art-6-bourree-1.ly
@@ -6,34 +6,50 @@ Global = {
 
 Soprano = \context Voice = "one" \relative c' {
   \voiceOne
-  \stemUp\tieUp
+  \stemNeutral\tieNeutral\slurNeutral
   \override MultiMeasureRest.staff-position = #0
   \override Rest.staff-position = #0
   \repeat volta 2 {
-  \partial 4 r4
+  \partial 4 fis4
   %1
-  | R1*11
+  | b fis g e
+  | fis8 e d cis b4 b'
+  | ais b cis d8 b
+  | cis4 fis,2 cis'4
+  %5
+  | d8( cis b2) e8 b
+  | cis4 a d cis8\prall b
+  | a4 g8 fis e fis g e
+  | fis gis a gis gis a b gis
+  | a b cis a b cis d b
+  %10
+  | cis fis e d cis4 b
+  | a gis8 fis gis4 eis
     \alternative {
-      {
-  | \partial 2. r2.
-      }
-      {
-  | \partial 2. r2.
-      }
+      { \partial 2. fis2. }
+      { \partial 2. fis }
     }
   }
   \break
   \repeat volta 2 {
-  \partial 4 r4
-  %1
-  | R1*11
+  \partial 4 cis'4
+  %15
+  | ais fis b cis
+  | d8 cis d cis b4 e
+  | cis b8 a b4 gis
+  | a2.\mordent e8 d
+  | e4 fis8 g! a4 g8 fis
+  %20
+  | g4 e e'2~
+  | e8 cis d fis e d cis b
+  | ais b cis ais fis4 cis'
+  | d8( cis b2) cis8 d
+  | e( cis ais2) fis'4
+  %25
+  | fis, b d8 cis b ais
     \alternative {
-      {
-  | r2.
-      }
-      {
-  | r2.
-      }
+      { b2. }
+      { b }
     }
     \override Score.TextMark.self-alignment-X = #CENTER
     \textEndMark \markup { \musicglyph "scripts.ufermata" }
@@ -41,50 +57,52 @@ Soprano = \context Voice = "one" \relative c' {
   \fine
 }
 
-Alto = \context Voice = "two" \relative c' {
-  \voiceTwo
-  \stemDown\tieDown
-  \override Rest.staff-position = #0
-  %1
-}
-
-Tenor = \context Voice = "three" \relative c {
-  \voiceThree
-  \stemUp\tieUp
-  \override Rest.staff-position = #0
-  %1
-}
-
 Bass = \context Voice = "four" \relative c {
   \voiceFour
-  \stemDown\tieDown
+  \stemNeutral\tieNeutral\slurNeutral
   \override MultiMeasureRest.staff-position = #0
   \override Rest.staff-position = #0
   \repeat volta 2 {
-  \partial 4 r4
+  \partial 4 b8 cis
   %1
-  | R1*11
+  | d4 b e e,
+  | b' cis d e~
+  | e8 d cis b ais4 b
+  | fis'8 e fis g fis e d cis
+  %5
+  | b4 a'! gis e
+  | a, g'! fis e
+  | fis g a a,
+  | d d'2 cis8 b
+  | cis4 fis, d e
+  %10
+  | a gis8 fis eis4 cis
+  | fis d b cis
     \alternative {
-      {
-  | r2.
-      }
-      {
-  | r2.
-      }
+      { fis, fis'8 e! d cis }
+      { fis,2. }
     }
   }
   \break
   \repeat volta 2 {
-  \partial 4 r4
-  %1
-  | R1*11
+  \partial 4 fis4
+  %15
+  | fis'8 e! fis e d cis b ais
+  | b4 fis'8 gis a! gis fis gis
+  | a4 fis d e
+  | a, a'8 b cis d cis b
+  | a b a g! fis4 b
+  %20
+  | e,8 fis g e cis d e cis
+  | ais4 b g e
+  | fis fis'~ fis8 gis ais fis
+  | b( a! g! b) a( g fis a)
+  | g( fis e g) fis( e d fis)
+  %25
+  | e( d cis b) fis'4 fis,
     \alternative {
-      {
-  | \partial 2. r2.
-      }
-      {
-  | \partial 2. r2.
-      }
+      { \partial 2. b8[ d cis b] ais[ gis] }
+      { \partial 2. b2. }
     }
     \tweak direction #DOWN
     \textEndMark \markup { \musicglyph "scripts.dfermata" }
@@ -101,13 +119,11 @@ Bass = \context Voice = "four" \relative c {
       \Global
       \clef treble
       \Soprano
-      \Alto
     >>
     \context Staff = "lower" <<
       \set Staff.midiInstrument = #"acoustic grand"
       \Global
       \clef bass
-      \Tenor
       \Bass
     >>
   >>