Jordi Savall and Hisperion XX recorded in 1979 "Llibre Vermell de Montserrat. A fourteenth century pilgrimage" (usually known as The Red Book of Montserrat). Here is one song of this remarkable album. Read more about Jordi Savall here
STELLA SPLENDENS
Stella splendens in monte
Ut solis radium
Miraculis serrato,
Exaudi populum.
Concurrunt universi
Gaudentes populi,
Divites et egeni,
Grandes et parvuli,
Ipsum ingrediuntur,
Ut cernunt oculi,
Et inde revertuntur
Gratiis repleti.
Principes et magnates
Ex stirpe regia,
Saeculi potestates
Obtenta venia
Peccaminun proclamant
Tundentes pectora,
Poplite flexo clamant
Hic: Ave Maria.
Prelati et barones,
Comites incliti,
Religiosi omnes
Atque presbyteri,
Milites, mercatores,
Cives, marinari,
Burgenses, piscatores
Preamiantur ibi.
ENGLISH TRANSLATION
A bright star miraculously
shining on the mountain
like sunshine.
Hark the mass
assembling,
all people rejoicing,
the rich and the poor,
the greatest and the pettiest,
are gathering as well
as we are self-witnessing,
let’s all herald once more
this: Hail Mary