Because the parishes I play at have little tradition of singing older hymns, many of the songs I’m picking up in OCP’s Guitar Accompaniment Book are in that genre.
This is a Marian song suitable for Easter set to a very old tune REGINA CAELI. The text is here and while OCP has the sheet music it should be available in the public domain as well.
Godsongs has looked into this hymn here.
A rather harsh sounding backing: