If it has fallen upon our happy lot to chant the kalendas this year, then we can exercise the option to sing it in the more solemn tone in honour of the holy birth of our Redeemer.| Cappella Gregoriana Sanctæ Cæciliæ olim Xicatunensis
If it has fallen upon our happy lot to chant the kalendas this year, then we can exercise the option to sing it in the more solemn tone in honour of the holy birth of our Redeemer.| Cappella Gregoriana Sanctæ Cæciliæ olim Xicatunensis