The Christmas Alleluia

This is the text of the Alleluia verse for Christmas Day:

Alleluia. Dies sanctificatus illuxit nobis;
venite gentes et adorate Dominum,
quia hodie descendit lux magna super terram.
Alleluia.

Alleluia. A holy day has dawned for us;
come, nations, and worship the Lord,
for today a great light has descended over earth.
Alleluia.

Here the Schola des Moines de Monserrat sing it:




This is Giovanni Vianini singing (and playing!) the "Alleluja di Natale - canto gregoriano nell'interpretazione di Giovanni Vianini direttore della Schola Gregoriana Mediolanensis - Basilica di San Marco Milano, Italia":



Here's the chant score from the Brazilian Benedictines (and their mp3 version):

There is no Rose

There is no rose of such virtue
As is the rose that bare Jesu.
Alleluia.

For in this rose contained was
Heaven and earth in little space.
Res miranda.

By that rose we may well see
That He is God in persons three.
Pares forma.

The angels sungen the shepherds to:
Gloria in excelsis Deo.
Gaudeamus.

Leave we all this worldly mirth,
And follow we this joyful birth.
Transeamus.

Alleluia, res miranda,
Pares forma, gaudeamus,
transeamus.

Here's a video of this song; it's an anonymous 14th-century English carol (original words here):