https://www.brilliantclassics.com/articles/c/colombano-psalms-for-six-voices/
http://www.elegiaclassics.com/catalogo/m-a-centorio,-p-heredia,-mottetti-inni-antifone-detail.html
https://www.facebook.com/Cappella-Musicale-della-Cattedrale-di-Vercelli-1559774104277761/