This is another hymn for Advent. The text is Martin Luther’s adaptation of St Ambrose’s text, Veni Redemptor gentium. The translation is by William Reynolds, but the text in CWB II has a different translation from halfway through verse 3 by Martin Seltz.
It is set to NUN KOMM DER HEIDEN HEILAND.
More fake BIAB organ:
This version from Hymnary has the text and tune as in CWB II.