The edition is normal and useable, but in the Agnus there are two instances of a notation none of us has ever seen or can guess at the meaning of. It appears on the bass line. I'd describe it as "upside down capital J with diaeresis". Picture attached.
Actually that looks like a neum in a German Graduale I was consulted on once. The flag of the virga was curled on the top and bottom, like a candy cane. Fascinating.
It's a stylized R, for "reprise", usually to mark the repeating part of a canon or the petite reprise at the end of a strophe. It also looks a bit like two eyes and a nose, so in grad school we called it a Waldo (as in, "Where's Waldo?")
Under the term "petite reprise" and "reprise" I have found some convincing examples, thank-you, @JL.
In this piece, though, it's hard for me to see how to interpret them as reprise marks, because neither the text nor the rhythm seem to propose reprising the whole Agnus as indicated. Could they mean anything else?
To participate in the discussions on Catholic church music, sign in or register as a forum member, The forum is a project of the Church Music Association of America.