Rik,
I know that the Flemish "Susa Nina" is sung as a counter part for the German Christmas Song "Stille Nacht".
I put the notes on a score for you.
!NoteWorthyComposerClip(2.0,Single)
|Clef|Type:Treble
|TimeSig|Signature:3/4
|Note|Dur:Half,Dotted|Pos:-4
|Bar
|Note|Dur:Half,Dotted|Pos:-2
|Bar
|Note|Dur:Half,Dotted|Pos:1
|Bar
|Note|Dur:Half,Dotted|Pos:-2
|Bar
|Note|Dur:4th,Dotted|Pos:-5
|Note|Dur:8th|Pos:-4
|Note|Dur:4th|Pos:-2
|Bar
|Note|Dur:4th,Dotted|Pos:-3
|Note|Dur:8th|Pos:-4
|Note|Dur:4th|Pos:-5
|Bar
|Note|Dur:Half|Pos:-4
|Note|Dur:4th|Pos:-3
|Bar
|Note|Dur:Half|Pos:-2
|Note|Dur:4th|Pos:-6
|Bar
|Note|Dur:4th,Dotted|Pos:1
|Note|Dur:8th|Pos:0
|Note|Dur:4th|Pos:-1
|Bar
|Note|Dur:4th,Dotted|Pos:-1
|Note|Dur:8th|Pos:-2
|Note|Dur:4th|Pos:-3
|Bar
|Note|Dur:4th,Dotted|Pos:-4
|Note|Dur:8th|Pos:-3
|Note|Dur:4th|Pos:-4
|Bar
|Note|Dur:Half|Pos:-2
|Note|Dur:4th|Pos:-6
|Bar
|Note|Dur:4th,Dotted|Pos:1
|Note|Dur:8th|Pos:0
|Note|Dur:4th|Pos:-1
|Bar
|Note|Dur:4th,Dotted|Pos:-1
|Note|Dur:8th|Pos:-2
|Note|Dur:4th|Pos:-3
|Bar
|Note|Dur:Half|Pos:-4
|Note|Dur:4th|Pos:-3
|Bar
|Note|Dur:Half,Dotted|Pos:-2
|Bar
|Note|Dur:Half,Dotted|Pos:-1
|Bar
|Note|Dur:Half|Pos:0
|Note|Dur:4th|Pos:2
|Bar
|Note|Dur:Half,Dotted|Pos:1
|Bar
|Note|Dur:Half|Pos:-2
|Note|Dur:8th|Pos:-4
|Note|Dur:8th|Pos:-3
|Bar
|Note|Dur:Half|Pos:-2
|Note|Dur:4th|Pos:-2
|Bar
|Note|Dur:Half|Pos:-2
|Note|Dur:4th|Pos:-2
|Bar
|Note|Dur:Half,Dotted|Pos:-2
|Bar|Style:SectionClose|SysBreak:Y
!NoteWorthyComposerClip-End