"Immaculate Mary" or "Immaculate Mother" (French: Ô Vierge Marie) is a popular Roman Catholic Marian hymn.
It is often sung in honour of the Immaculate Conception of the Blessed Virgin Mary.
[1] The earliest version of the hymn was written in 1873 by French priest and seminary director Jean Gaignet, for pilgrims to the site of the apparitions of Our Lady of Lourdes.
A different text is sung at novena services and Masses honouring Our Lady of Perpetual Help, as well as Marian processions in general.
This version is commonly associated with Baclaran Church, the Philippine's national shrine for the icon and its devotion.