This is something that I was able to record. It's me singing the opening prayer at Mass. The lyrics are:

Tantum ergo sacramentum
veneremur cernui
et antiquum documentum.
Novo cedat ritui;
praestet fides supplementum,
sensuum defectui.

Genitori genitoque.
Laus et jubiulatio
salus, honor, virtus quoque.
Sit et benedictio:
precedenti ab utroque.
Compar sit laudatio
Amen