diff --git a/welkom.ly b/welkom.ly
index 071cfad..5975971 100644
--- a/welkom.ly
+++ b/welkom.ly
@@ -1,7 +1,7 @@
 \include "english.ly"
 \version "2.21.4"
 \header {
-	composer = "Tekst en muziek door Felixiaan en Midgard"
+	composer = \markup { \right-column { "Tekst door Felixiaan, Midgard en Robbe" "Muziek door Felixiaan en Midgard" } }
 	title = "Welkom"
 	subtitle = \markup{ \concat { "Voor de " \italic{on/off-generatie} } }
 	tagline = ##f
@@ -73,18 +73,18 @@ anonymousStaffVocals = {
 				%\new Voice = "vocals3" \vocalsIIIMusic \addlyrics \vocalsIIILyrics
 			>>
 
-			\new PianoStaff \with { instrumentName = "Piano" shortInstrumentName = "P." midiInstrument = "Acoustic Grand" } <<
+			\new PianoStaff \with { instrumentName = "Piano" shortInstrumentName = "Pno." midiInstrument = "Acoustic Grand" } <<
 				\new Staff \pianoRHMusic
 				\new Staff \pianoLHMusic
 			>>
 
-			\new GrandStaff \with { instrumentName = "Accordeon" shortInstrumentName = "Acc." midiInstrument = "Accordion" } <<
-				\new Staff \accordionRHMusic
-				\new Staff \accordionLHMusic
-			>>
+			%\new GrandStaff \with { instrumentName = "Accordeon" shortInstrumentName = "Acc." midiInstrument = "Accordion" } <<
+				%\new Staff \accordionRHMusic
+				%\new Staff \accordionLHMusic
+			%>>
 
 			\new StaffGroup <<
-				%\new Staff \with { instrumentName = "Viool" shortInstrumentName = "Vln." midiInstrument = "Violin" } \violinMusic
+				\new Staff \with { instrumentName = "Viool" shortInstrumentName = "Vln." midiInstrument = "Violin" } \violinMusic
 				\new Staff \with { instrumentName = "Cello" shortInstrumentName = "Vcl." midiInstrument = "Cello" } \celloMusic
 			>>
 
@@ -99,17 +99,14 @@ anonymousStaffVocals = {
 }
 
 \book {
-	\bookOutputSuffix "accordeon"
-	\header { instrument = "Accordeon" }
+	\bookOutputSuffix "viool"
+	\header { instrument = "Viool" }
 	\paper { ragged-bottom = ##f ragged-last-bottom = ##f }
 	\score {
 		\compressMMRests
 		<<
 			\anonymousStaffVocals
-			\new GrandStaff \with { instrumentName = "Accordeon" midiInstrument = "Accordion" } <<
-				\new Staff \accordionRHMusic
-				\new Staff \accordionLHMusic
-			>>
+			\new Staff \with { instrumentName = "Viool" midiInstrument = "Violin" } \violinMusic
 		>>
 		\layout {}
 		\midi {}