Donna mentioned that her parish was singing this Marian hymn. The sheet music says it is by Ricky Manalo and was written in celebration of the 150th anniversary of the Order of Carmelites in America. The text is traditional and even if that is common knowledge it really should have been noted on the sheet music. The origin of the text is correctly noted at OCP.
Us ex-Presbyterians aren’t big on Marian hymns but this is quite singable and has a descant and a Spanish lyric by Jorge Monterroso. The refrain is in Latin, English or Spanish.
OCP sell the sheet music and the text is in their preview.