O Sanctissima

"O Sanctissima" (O most holy) is a Roman Catholic hymn in Latin, seeking the prayers of the Blessed Virgin Mary, and often sung in various languages on her feast days. The earliest known publication was from London in 1792, presenting it as a traditional song from Sicily; but no original source or date has been confirmed for the simple melody or the poetic text. The tune is often called "Sicilian Mariners Hymn" or similar titles, referring to the seafarers' nightly invocation of Mary as their maternal protector:Our Lady, Star of the Sea. The tune has been notably reused for the German Christmas carol "O du fröhliche" (O, how joyful), the English recessional hymn "Lord, Dismiss Us With Thy Blessing", and the first half of the American civil rights anthem "We Shall Overcome".

Similar Latin lyrics have been set to entirely different tunes since the 1500s, by notable composers and arrangers including Leonhard Kleber (probably editing another composer), Louis-Nicolas Clérambault, E.T.A. Hoffmann, Antonín Dvořák, and Fritz Kreisler (using a melody of Arcangelo Corelli).

Below is a common version of the text; many other versions exist.

O sanctissima, o piissima,
dulcis Virgo Maria!
Mater amata, intemerata,
ora, ora pro nobis.

Tu solatium et refugium,
Virgo Mater Maria.
Quidquid optamus, per te speramus;
ora, ora pro nobis.

Ecce debiles, perquam flebiles;
salva nos, o Maria!
Tolle languores, sana dolores;
ora, ora pro nobis.

Virgo, respice, Mater, aspice;
audi nos, o Maria!
Tu medicinam portas divinam;
ora, ora pro nobis.

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Wikipedia