he music for
this page is Veni Emmanuel a 15th century plainsong melody WOV193.
That is another example of Crede Signo perhaps too.
The 13th century author of the original Latin words of this hymn is unknown.
The 20th century re- translation given here is by T A Lacey.
O Come O Come Emmanuel is
perhaps the best known of all the Advent hymns and probably the oldest.
Because of the tune, it is certainly one of the most popular.