Traditional, Still, Still, Still, (SATB)

(from Wikipedia) “Still, Still, Still,” is a folk tune from the district of Salzburg. The tune appeared for the first time in 1865 in a folksong collection of Vinzenz Maria Süß [de] (1802–1868), founder of the Salzburg Museum. The words describe the peace of the infant Jesus and his mother as the baby is sung to sleep. They have changed slightly over the years but the modern Standard German version remains attributed to Georg Götsch[de] (1895–1956). There are various English translations.

This arrangement comes from:Weihnachtslieder fur Blockflotenquartett
Order copy here: https://www.sheetmusicplus.com/title/weihnachtslieder-recorder-qrt-sheet-music/5512019