Notre-Dame and the rest of Paris in the background of a c. 1452–1460 illuminated manuscript by Jean Fouquet
Notre-Dame, Paris in the background of an illuminated manuscript by Jean Fouquet

Psalm 118:24,1 [Latin Vulgate: Psalm 117:24,1]  

24 This is the day that the Lord has made; let us rejoice and be glad in it.

1 O give thanks unto the Lord; for he is good: because his mercy endureth for ever.

Haec est dies quam fecit Dominus; exsultemus, et laetemur in ea. Confitemini Domino, quoniam bonus, quoniam in saeculum misericordia ejus.


Haec est, composed by Pérotin (fl. c. 1200)

Pérotin: Haec dies

^Performed by Cantica of the Czech Republic