The CMAA has put together a selection of some seriously fun products, including several Cantate Domino shirts (“Sing a New Song!”) that print the authentic Gregorian chants and mugs and magnets that do the same. And have you ever thought of a Dies Irae clock? One now exists. Or consider: a baby’s bib with the communion chant “Introibo” printed, including the words that translate “to God who giveth joy to my youth.”